# ToolBux — llms.txt
# Free online tools at https://toolbux.online — 200+ tools, 20 categories, no signup, no upload.

> ToolBux is a free online tools website. Every tool runs in the browser, needs no account, and gives an instant result.

## Pages
- [Home](https://toolbux.online/)
- [All Tools](https://toolbux.online/tools)
- [Blog](https://toolbux.online/blog)
- [About](https://toolbux.online/about)
- [Contact](https://toolbux.online/contact)
- [Privacy Policy](https://toolbux.online/privacy-policy)
- [Cookie Policy](https://toolbux.online/cookie-policy)
- [Terms of Service](https://toolbux.online/terms-of-service)
- [Sitemap](https://toolbux.online/sitemap.xml)

## Image Tools — Compress, resize, convert and crop images — free, instant, in your browser.
- [Image Compressor](https://toolbux.online/tools/image-tools/image-compressor): Shrinks JPG, PNG and WebP file size with a quality slider, in the browser. Problem solved: Websites and forms reject or load slowly with heavy images.
- [Compress Image to 200KB](https://toolbux.online/tools/image-tools/compress-image-to-200kb): Compresses an image to a target size you type: 100KB, 200KB, 500KB or 1MB. Problem solved: Visa, job and university portals reject files over a fixed KB limit.
- [Image Resizer](https://toolbux.online/tools/image-tools/image-resizer): Changes pixel width and height or scales by percentage, keeping the aspect ratio. Problem solved: Images are the wrong size for social posts, banners and listings.
- [Image Cropper](https://toolbux.online/tools/image-tools/image-cropper): Cuts out the part of the image you select, with preset ratios. Problem solved: Unwanted edges and wrong aspect ratios ruin thumbnails and profiles.
- [Image Converter](https://toolbux.online/tools/image-tools/image-converter): Converts between JPG, PNG, WebP, AVIF and GIF. Problem solved: A site or app accepts only one format and refuses the file you have.
- [HEIC to JPG Converter](https://toolbux.online/tools/image-tools/heic-to-jpg): Turns iPhone HEIC photos into universal JPG files. Problem solved: HEIC photos do not open on Windows, forms and many websites.
- [WebP to JPG Converter](https://toolbux.online/tools/image-tools/webp-to-jpg): One-click conversion from WebP or PNG to JPG. Problem solved: Downloaded WebP images cannot be edited or uploaded in many tools.
- [Image Rotator & Flipper](https://toolbux.online/tools/image-tools/image-rotator): Rotates 90, 180 or 270 degrees or flips horizontally and vertically. Problem solved: Phone photos come out sideways or mirrored.
- [Background Remover (Lite)](https://toolbux.online/tools/image-tools/background-remover): Removes a solid background and exports a transparent PNG. Problem solved: Sellers and creators need clean product shots without Photoshop.
- [Image to Base64](https://toolbux.online/tools/image-tools/image-to-base64): Turns an image into Base64 code you can copy or embed. Problem solved: Developers and sellers need to embed or share an image quickly.

## JSON Developer Tools — Format, validate and convert JSON — with the exact error line shown.
- [JSON Formatter / Beautifier](https://toolbux.online/tools/json-developer-tools/json-formatter): Pretty-prints messy JSON with 2 or 4-space indent and a tree view. Problem solved: Minified API output is unreadable and impossible to debug.
- [JSON Validator](https://toolbux.online/tools/json-developer-tools/json-validator): Checks syntax and points to the exact line and column of the error. Problem solved: One missing comma breaks an app; finding it by eye wastes hours.
- [JSON Minifier](https://toolbux.online/tools/json-developer-tools/json-minifier): Removes all whitespace to shrink JSON to one line. Problem solved: Large payloads slow APIs and cost bandwidth.
- [JSON to CSV Converter](https://toolbux.online/tools/json-developer-tools/json-to-csv): Turns JSON arrays into spreadsheet rows you can download. Problem solved: Non-developers cannot read JSON but need the data in Excel.
- [JSON to YAML Converter](https://toolbux.online/tools/json-developer-tools/json-to-yaml): Converts JSON into YAML format. Problem solved: Config files and older systems demand a different format.
- [JSON to Excel Converter](https://toolbux.online/tools/json-developer-tools/json-to-excel): Turns JSON into a CSV file that opens directly in Excel. Problem solved: Teams need API data in a spreadsheet, not raw JSON.
- [JSON to TypeScript](https://toolbux.online/tools/json-developer-tools/json-to-typescript): Generates TypeScript interfaces from a JSON sample. Problem solved: Writing data models by hand from API samples is slow and error-prone.
- [Base64 Encoder / Decoder](https://toolbux.online/tools/json-developer-tools/base64-encoder): Encodes text to Base64 and decodes it back. Problem solved: APIs, emails and data URLs require Base64; manual coding is tedious.
- [JWT Decoder](https://toolbux.online/tools/json-developer-tools/jwt-decoder): Shows the header and payload inside a JSON Web Token. Problem solved: Developers cannot see why a login token is expired or invalid.
- [Regex Tester](https://toolbux.online/tools/json-developer-tools/regex-tester): Tests a pattern against sample text with live match highlighting. Problem solved: A wrong regex silently matches the wrong data in production.

## Everyday Calculators — Age, percentage, tip, date and loan calculators — one page per exact question.
- [Age Calculator](https://toolbux.online/tools/everyday-calculators/age-calculator): Shows exact age in years, months and days — even hours — from a birth date. Problem solved: Forms, jobs and official work need exact age, not a guess.
- [Percentage Calculator](https://toolbux.online/tools/everyday-calculators/percentage-calculator): Solves 'what is X% of Y', increase, decrease and difference. Problem solved: Percentages are the most common everyday maths people get wrong.
- [Tip Calculator](https://toolbux.online/tools/everyday-calculators/tip-calculator): Calculates tip and splits the bill per person. Problem solved: Groups argue over the bill; this ends it in seconds.
- [Date / Days Calculator](https://toolbux.online/tools/everyday-calculators/date-calculator): Counts days between two dates, or adds and subtracts days. Problem solved: Deadlines, notice periods and countdowns need exact day counts.
- [Hours Calculator](https://toolbux.online/tools/everyday-calculators/hours-calculator): Adds up work hours and breaks for timesheets. Problem solved: Manual timesheet maths causes payroll mistakes.
- [Discount Calculator](https://toolbux.online/tools/everyday-calculators/discount-calculator): Shows final price and saving after a percentage discount and tax. Problem solved: Sale tags hide the real price; shoppers want the true total.
- [Loan / Interest Calculator](https://toolbux.online/tools/everyday-calculators/loan-calculator): Shows monthly payment, total interest and payoff schedule. Problem solved: Borrowers cannot see the real cost of a loan from the headline rate.
- [Grade Calculator](https://toolbux.online/tools/everyday-calculators/grade-calculator): Turns marks into grades, percentage and GPA. Problem solved: Students cannot tell what score they still need to pass or excel.
- [Calorie Calculator](https://toolbux.online/tools/everyday-calculators/calorie-calculator): Estimates daily calories your body burns and needs. Problem solved: Diet and fitness plans fail without a personal calorie target.
- [Love Calculator](https://toolbux.online/tools/everyday-calculators/love-calculator): Playful compatibility percentage from two names. Problem solved: Shareable fun results bring free social traffic to the hub.

## Business / Freelancer Tools — Invoices, quotes, payslips and brand names — professional documents in 60 seconds.
- [Invoice Generator](https://toolbux.online/tools/business-tools/invoice-generator): Fill a form, get a branded invoice PDF with tax and totals. Problem solved: Freelancers lose time and look unprofessional with Word invoices.
- [Quotation / Estimate Generator](https://toolbux.online/tools/business-tools/quotation-generator): Creates a priced quote the client can approve before work starts. Problem solved: Verbal quotes cause disputes about price and scope.
- [Payslip Generator](https://toolbux.online/tools/business-tools/payslip-generator): Builds an employee payslip with earnings and deductions. Problem solved: Small businesses have no payroll system but staff need proof of pay.
- [Receipt Maker](https://toolbux.online/tools/business-tools/receipt-maker): Creates a clean payment receipt in seconds. Problem solved: Customers ask for proof of payment sellers cannot produce quickly.
- [Purchase Order Generator](https://toolbux.online/tools/business-tools/purchase-order-generator): Creates a formal PO with items, quantities and terms. Problem solved: Informal orders cause wrong deliveries and payment confusion.
- [Business Name Generator](https://toolbux.online/tools/business-tools/business-name-generator): Suggests brandable names from keywords, with style filters. Problem solved: Founders get stuck naming the business and delay launching.
- [Domain Name Generator](https://toolbux.online/tools/business-tools/domain-name-generator): Suggests names and checks if the .com is likely available. Problem solved: A great name is useless if the domain is already taken.
- [Slogan Generator](https://toolbux.online/tools/business-tools/slogan-generator): Creates short tagline options for a brand or product. Problem solved: Small brands cannot afford a copywriter for one line.
- [Logo Maker (Basic)](https://toolbux.online/tools/business-tools/logo-maker): Combines icon, text and colours into a simple starter logo. Problem solved: New businesses need a usable logo before they can pay a designer.
- [QR Code for Business](https://toolbux.online/tools/business-tools/qr-code-business): Makes QR codes for payment, menu, review and contact pages. Problem solved: Customers will not type long links; a scan gets them there.

## YouTube Creator Tools — Thumbnails, titles, tags and descriptions — one paste, everything for your next video.
- [YouTube Thumbnail Downloader](https://toolbux.online/tools/youtube-tools/youtube-thumbnail-downloader): Saves any public video's thumbnail in HD and all smaller sizes. Problem solved: Creators need reference thumbnails; screenshots are low quality.
- [Thumbnail Maker](https://toolbux.online/tools/youtube-tools/youtube-thumbnail-maker): Builds a 1280x720 thumbnail with text, image and shapes. Problem solved: Bad thumbnails kill clicks; design software is too complex.
- [YouTube Title Generator](https://toolbux.online/tools/youtube-tools/youtube-title-generator): Suggests clickable title ideas from a topic keyword. Problem solved: Creators stare at a blank title box and publish weak titles.
- [Tag Generator / Extractor](https://toolbux.online/tools/youtube-tools/youtube-tag-generator): Suggests tags, and extracts tags used by any public video. Problem solved: Wrong tags mean YouTube shows the video to the wrong audience.
- [Description Generator](https://toolbux.online/tools/youtube-tools/youtube-description-generator): Drafts a structured description with chapters and links. Problem solved: Writing descriptions from scratch for every video is slow.
- [Hashtag Generator](https://toolbux.online/tools/youtube-tools/hashtag-generator): Creates relevant hashtags for Shorts and videos. Problem solved: Creators guess hashtags and miss discovery traffic.
- [Subscriber Counter](https://toolbux.online/tools/youtube-tools/subscriber-counter): Shows a channel's live subscriber count from its link. Problem solved: Creators and fans want live counts without opening analytics.
- [Comment Picker](https://toolbux.online/tools/youtube-tools/comment-picker): Picks a random comment as a giveaway winner. Problem solved: Picking a winner by hand looks biased and takes forever.
- [Channel ID Finder](https://toolbux.online/tools/youtube-tools/channel-id-finder): Finds the channel ID and basic stats from any channel URL. Problem solved: APIs and tools ask for an ID that YouTube hides in the UI.
- [Video to GIF](https://toolbux.online/tools/youtube-tools/video-to-gif): Turns a short clip you upload into a GIF. Problem solved: Creators need quick GIFs for posts without editing software.

## Text & AI Writing Tools — Paraphrase, summarise and count — 1,000 words free, no signup.
- [Paraphraser](https://toolbux.online/tools/text-writing-tools/paraphrasing-tool): Rewrites text in new words, in Standard, Formal and Creative modes. Problem solved: Writers need fresh wording without changing the meaning.
- [Sentence Rewriter](https://toolbux.online/tools/text-writing-tools/sentence-rewriter): Rewrites one sentence at a time with several options. Problem solved: One awkward sentence can block a whole assignment or post.
- [Summarizer](https://toolbux.online/tools/text-writing-tools/text-summarizer): Condenses a long article into key points or a short paragraph. Problem solved: Long reading material takes too long before exams or meetings.
- [Word Counter](https://toolbux.online/tools/text-writing-tools/word-counter): Counts words, characters, sentences and reading time. Problem solved: Essays and posts have strict limits users keep breaking.
- [Character Counter](https://toolbux.online/tools/text-writing-tools/character-counter): Counts characters with and without spaces, live. Problem solved: Tweets, ads and meta descriptions fail when they are too long.
- [Case Converter](https://toolbux.online/tools/text-writing-tools/case-converter): Changes text to UPPER, lower, Title or Sentence case. Problem solved: Retyping text just to fix capitalisation wastes time.
- [Grammar Checker](https://toolbux.online/tools/text-writing-tools/grammar-checker): Flags grammar, spelling and punctuation errors with fixes. Problem solved: Small errors make students and professionals look careless.
- [AI Detector](https://toolbux.online/tools/text-writing-tools/ai-detector): Estimates whether text looks AI-written, with a clear disclaimer. Problem solved: Teachers and editors need a first check, not a final verdict.
- [Plagiarism Checker](https://toolbux.online/tools/text-writing-tools/plagiarism-checker): Compares text against web sources and reports matches. Problem solved: Accidental copying can fail an assignment or harm a site.
- [Text to Speech](https://toolbux.online/tools/text-writing-tools/text-to-speech): Reads pasted text aloud in natural voices. Problem solved: Proofreading by ear catches errors the eye misses.

## Design Tools (Color + QR) — Palettes from an image or keyword, and QR codes that never expire — free, no account.
- [Color Palette Generator](https://toolbux.online/tools/design-tools/color-palette-generator): Creates matching 5-colour palettes; lock colours you like. Problem solved: Choosing colours that work together is hard for non-designers.
- [Palette from Image](https://toolbux.online/tools/design-tools/palette-from-image): Extracts the main colours from any uploaded photo. Problem solved: Brands want designs that match a photo or logo they already have.
- [Gradient Generator](https://toolbux.online/tools/design-tools/gradient-generator): Builds CSS gradients with live preview and copy-ready code. Problem solved: Hand-writing gradient CSS is fiddly and slow.
- [Color Picker / Hex to RGB](https://toolbux.online/tools/design-tools/color-picker): Picks a colour and converts HEX, RGB and HSL values. Problem solved: Developers and designers constantly convert colour formats.
- [Contrast Checker](https://toolbux.online/tools/design-tools/contrast-checker): Tests text and background pairs against WCAG accessibility ratios. Problem solved: Low-contrast text is unreadable and fails accessibility checks.
- [QR Code Generator](https://toolbux.online/tools/design-tools/qr-code-generator): Creates static QR codes for links, WiFi, vCard, WhatsApp and menus. Problem solved: Typing links is slow; printed materials need a scan shortcut.
- [Barcode Generator](https://toolbux.online/tools/design-tools/barcode-generator): Creates standard barcodes from a number or SKU. Problem solved: Small sellers need barcodes without buying label software.
- [Favicon Generator](https://toolbux.online/tools/design-tools/favicon-generator): Turns an image or letter into all favicon sizes in one ZIP. Problem solved: Sites look unfinished without the small browser-tab icon.
- [Font Pairing Generator](https://toolbux.online/tools/design-tools/font-pairing-generator): Suggests heading and body font combinations with previews. Problem solved: Bad font pairs make good content look amateur.
- [Logo Maker (Basic)](https://toolbux.online/tools/design-tools/logo-maker-basic): Builds a simple text and icon logo and exports PNG. Problem solved: Startups need a presentable logo on day one, for free.

## Security Tools — Passwords, hashes and encryption — generated 100% in your browser. Nothing is sent to a server.
- [Password Generator](https://toolbux.online/tools/security-tools/password-generator): Creates random passwords by length and character types. Problem solved: People reuse weak passwords that get cracked in seconds.
- [Password Strength Checker](https://toolbux.online/tools/security-tools/password-strength-checker): Scores a password and estimates crack time, with tips. Problem solved: Users cannot tell a strong password from a weak one.
- [Passphrase Generator](https://toolbux.online/tools/security-tools/passphrase-generator): Builds memorable word-based passwords like river-otter-lamp. Problem solved: Random strings are secure but impossible to remember.
- [PIN Generator](https://toolbux.online/tools/security-tools/pin-generator): Creates random 4 to 8 digit PINs. Problem solved: People pick birth years and other guessable PINs.
- [Hash Generator](https://toolbux.online/tools/security-tools/hash-generator): Creates MD5, SHA-1 and SHA-256 hashes of text or files. Problem solved: Developers need checksums to verify files and store data safely.
- [Encrypt / Decrypt (AES)](https://toolbux.online/tools/security-tools/aes-encrypt-decrypt): Encrypts text with a password, in the browser only. Problem solved: Sending secrets in plain text over chat or email is risky.
- [Base64 / URL Encoder-Decoder](https://toolbux.online/tools/security-tools/base64-url-encoder): Encodes and decodes Base64 and URL-escaped text. Problem solved: Broken encoded strings break links, APIs and emails.
- [IP Lookup](https://toolbux.online/tools/security-tools/ip-lookup): Shows your public IP, location and provider. Problem solved: Users need their IP for support, gaming and VPN checks.
- [Email Format Validator](https://toolbux.online/tools/security-tools/email-validator): Checks if an email address is correctly formatted. Problem solved: Typos in email lists cause bounces and lost customers.
- [Random String Generator](https://toolbux.online/tools/security-tools/random-string-generator): Makes API keys, tokens and coupon-style codes. Problem solved: Developers and marketers need unique codes quickly.

## PDF Tools (Exact Size) — Type the size the portal demands — 100KB, 200KB, 1MB — and get a file that passes, first try.
- [PDF Compressor to 100KB](https://toolbux.online/tools/pdf-tools/compress-pdf-to-100kb): Shrinks a PDF to under a target size you choose. Problem solved: Portals reject PDFs over 100KB, 200KB or 1MB limits.
- [JPG to PDF](https://toolbux.online/tools/pdf-tools/jpg-to-pdf): Combines one or many images into a single PDF. Problem solved: Applications demand documents as PDF, not phone photos.
- [PDF to JPG](https://toolbux.online/tools/pdf-tools/pdf-to-jpg): Exports each PDF page as an image. Problem solved: People need a page as a picture for posts and previews.
- [Merge PDF](https://toolbux.online/tools/pdf-tools/merge-pdf): Joins several PDFs into one file, in your order. Problem solved: Sending 8 separate files looks messy and gets lost.
- [Split PDF](https://toolbux.online/tools/pdf-tools/split-pdf): Extracts selected pages or splits into separate files. Problem solved: Only 3 pages of a 100-page report need to be shared.
- [Remove / Rotate PDF Pages](https://toolbux.online/tools/pdf-tools/rotate-pdf-pages): Deletes unwanted pages and fixes sideways pages. Problem solved: Blank and rotated pages make documents look careless.
- [PDF to Word](https://toolbux.online/tools/pdf-tools/pdf-to-word): Converts a PDF into an editable Word document. Problem solved: Text locked in a PDF cannot be edited or reused.
- [PDF to Excel](https://toolbux.online/tools/pdf-tools/pdf-to-excel): Extracts PDF tables into spreadsheet rows. Problem solved: Retyping tables from statements wastes hours.
- [Watermark PDF](https://toolbux.online/tools/pdf-tools/watermark-pdf): Stamps text like DRAFT or a name across pages. Problem solved: Shared drafts get forwarded without any protection mark.
- [e-Sign PDF (Basic)](https://toolbux.online/tools/pdf-tools/esign-pdf): Adds a drawn or typed signature to a PDF. Problem solved: Printing, signing and scanning for one signature is absurd.

## Salary / Paycheck Calculators USA — Take-home pay, state by state — every deduction shown line by line.
- [Take-Home Pay Calculator](https://toolbux.online/tools/salary-calculators/take-home-pay-calculator): Shows net pay after federal, state and payroll taxes, per state. Problem solved: Workers are shocked that gross pay is not what lands in the bank.
- [Salary Calculator](https://toolbux.online/tools/salary-calculators/salary-calculator): Converts pay between hourly, weekly, monthly and yearly. Problem solved: Job offers mix hourly and yearly figures that cannot be compared.
- [Hourly to Salary Converter](https://toolbux.online/tools/salary-calculators/hourly-to-salary): Turns an hourly rate into an annual salary, and back. Problem solved: Hourly workers cannot judge a salaried offer quickly.
- [Overtime Calculator](https://toolbux.online/tools/salary-calculators/overtime-calculator): Calculates time-and-a-half and double-time pay. Problem solved: Overtime maths is disputed between workers and employers.
- [Pay Raise Calculator](https://toolbux.online/tools/salary-calculators/pay-raise-calculator): Shows new salary and yearly gain from a percentage or flat raise. Problem solved: A 5% raise means nothing until it is a dollar figure.
- [Work Hours Calculator](https://toolbux.online/tools/salary-calculators/work-hours-calculator): Totals clock-in and clock-out hours minus breaks, for a week. Problem solved: Manual timesheets underpay or overpay by small errors.
- [Tax Estimator](https://toolbux.online/tools/salary-calculators/tax-estimator): Estimates income tax owed from salary and filing status. Problem solved: People fear a surprise tax bill in April.
- [401(k) Calculator](https://toolbux.online/tools/salary-calculators/401k-calculator): Projects retirement savings growth from contributions. Problem solved: Workers cannot see what small contributions become over time.
- [Freelance Rate Calculator](https://toolbux.online/tools/salary-calculators/freelance-rate-calculator): Turns a target salary into an hourly freelance rate. Problem solved: Freelancers underprice because they forget tax and downtime.
- [Bonus Tax Calculator](https://toolbux.online/tools/salary-calculators/bonus-tax-calculator): Estimates take-home from a bonus after withholding. Problem solved: Bonuses look bigger than the amount actually received.

## Unit Converter — One fast page per pair — including the niche pairs Google handles poorly.
- [Length Converter](https://toolbux.online/tools/unit-converter/length-converter): Converts km, miles, metres, feet, inches and more. Problem solved: Travel, trade and school mix metric and imperial daily.
- [Weight Converter](https://toolbux.online/tools/unit-converter/weight-converter): Converts kg, lbs, ounces, grams and stones. Problem solved: Recipes, gym and shipping labels use different systems.
- [Temperature Converter](https://toolbux.online/tools/unit-converter/temperature-converter): Converts Celsius, Fahrenheit and Kelvin. Problem solved: Weather and cooking abroad make no sense in the other scale.
- [Cooking Converter](https://toolbux.online/tools/unit-converter/cooking-converter): Cups to grams by ingredient, plus spoon measures. Problem solved: A cup of flour is not a cup of sugar; recipes fail without this.
- [Shoe Size Converter](https://toolbux.online/tools/unit-converter/shoe-size-converter): Converts US, UK, EU and JP shoe sizes for men, women and kids. Problem solved: Buying shoes online from another country risks the wrong size.
- [Ring Size Converter](https://toolbux.online/tools/unit-converter/ring-size-converter): Converts ring sizes and mm diameter between systems. Problem solved: Jewellery sizes differ by country and cannot be guessed.
- [Currency Converter](https://toolbux.online/tools/unit-converter/currency-converter): Converts money at live rates, with the rate date shown. Problem solved: Travellers and freelancers need a quick, dated estimate.
- [Data Storage Converter](https://toolbux.online/tools/unit-converter/data-converter): Converts KB, MB, GB, TB and bits and bytes. Problem solved: File sizes and internet plans confuse almost everyone.
- [Speed / Pressure / Torque Converter](https://toolbux.online/tools/unit-converter/speed-converter): Converts mph to km/h, PSI to bar, Nm to lb-ft and similar. Problem solved: Engineers and drivers meet foreign units in manuals and specs.
- [Fuel Consumption Converter](https://toolbux.online/tools/unit-converter/fuel-consumption-converter): Converts MPG to L/100km and back. Problem solved: Car economy figures cannot be compared across countries.

## Video & Audio Tools — Compress to the exact MB the app demands, in the browser, with no watermark and no upload.
- [Video Compressor to Exact MB](https://toolbux.online/tools/video-audio-tools/video-compressor): Shrinks a video to a target size you set, e.g. 25MB. Problem solved: Discord, email and WhatsApp reject videos over fixed limits.
- [Video Trimmer](https://toolbux.online/tools/video-audio-tools/video-trimmer): Cuts a clip to start and end times, no re-upload needed. Problem solved: Only 10 seconds of a long recording are actually needed.
- [Video to MP3 / Audio Extractor](https://toolbux.online/tools/video-audio-tools/video-to-mp3): Saves only the sound track of a video as MP3. Problem solved: Lectures and music are needed as audio, not heavy video files.
- [Video to GIF](https://toolbux.online/tools/video-audio-tools/video-to-gif-maker): Turns a few seconds of video into a looping GIF. Problem solved: GIFs get shared where video cannot be posted.
- [MP4 Converter](https://toolbux.online/tools/video-audio-tools/mp4-converter): Converts MOV, MKV, AVI and WebM to MP4 and back. Problem solved: Some players and sites refuse anything that is not MP4.
- [Video Resizer for Social](https://toolbux.online/tools/video-audio-tools/video-resizer-social): Resizes to TikTok, Reels, Shorts and feed dimensions. Problem solved: Wrong dimensions get cropped badly by every platform.
- [Audio Compressor](https://toolbux.online/tools/video-audio-tools/audio-compressor): Shrinks MP3 and WAV files to a smaller size. Problem solved: Podcast and voice files are too big to email or upload.
- [MP3 Trimmer](https://toolbux.online/tools/video-audio-tools/mp3-trimmer): Cuts audio to a selected section, with fade options. Problem solved: Ringtones and clips need one clean section, not the full track.
- [Volume Booster](https://toolbux.online/tools/video-audio-tools/volume-booster): Raises the volume of a quiet video or audio file. Problem solved: Phone recordings are often too quiet to hear.
- [Screen Recorder](https://toolbux.online/tools/video-audio-tools/screen-recorder): Records the browser tab or screen, saves as video. Problem solved: Quick demos and bug reports need recording without installs.

## SEO & Marketing Tools — The everyday SEO jobs, unlimited and instant, with a live Google preview on the page.
- [Meta Tag Generator](https://toolbux.online/tools/seo-marketing-tools/meta-tag-generator): Builds title, description and social tags with live preview. Problem solved: Hand-written meta tags get truncated or miss social tags.
- [Title / Description Checker](https://toolbux.online/tools/seo-marketing-tools/title-description-checker): Checks length and pixel width against Google limits. Problem solved: Cut-off titles in search results lose clicks.
- [Keyword Density Checker](https://toolbux.online/tools/seo-marketing-tools/keyword-density-checker): Counts keyword frequency in a page or pasted text. Problem solved: Writers over-use or under-use the keyword without knowing.
- [UTM Campaign Builder](https://toolbux.online/tools/seo-marketing-tools/utm-builder): Adds tracking parameters to a campaign link. Problem solved: Untracked links make ad and social results impossible to measure.
- [Robots.txt Generator / Tester](https://toolbux.online/tools/seo-marketing-tools/robots-txt-generator): Creates and validates robots.txt rules. Problem solved: One wrong line can block a whole site from Google.
- [XML Sitemap Generator](https://toolbux.online/tools/seo-marketing-tools/sitemap-generator): Builds a sitemap.xml from entered URLs. Problem solved: Pages not in a sitemap get discovered late or never.
- [Schema Markup Generator](https://toolbux.online/tools/seo-marketing-tools/schema-generator): Creates FAQ, Product, Article and LocalBusiness JSON-LD. Problem solved: Rich results need schema most site owners cannot hand-code.
- [Open Graph Checker](https://toolbux.online/tools/seo-marketing-tools/open-graph-checker): Previews how a link looks when shared on social media. Problem solved: Shared links show the wrong image or title and lose clicks.
- [Website Word Counter](https://toolbux.online/tools/seo-marketing-tools/word-counter-seo): Counts words and headings on any entered page text. Problem solved: Content teams cannot match competitor depth blindly.
- [SERP Simulator](https://toolbux.online/tools/seo-marketing-tools/serp-simulator): Previews a result exactly as it appears on Google. Problem solved: What you write is not what searchers actually see.

## Student & Education Tools — GPA, final grades and citations — the tools students return to every semester.
- [GPA Calculator](https://toolbux.online/tools/student-tools/gpa-calculator): Calculates semester and cumulative GPA, weighted and unweighted. Problem solved: Students cannot track where their GPA is heading.
- [Final Grade Calculator](https://toolbux.online/tools/student-tools/final-grade-calculator): Shows the exam score needed to reach a target grade. Problem solved: What do I need on the final? is every student's panic question.
- [Grade Calculator](https://toolbux.online/tools/student-tools/grade-calculator-student): Turns test and assignment marks into a course grade. Problem solved: Weighted categories make the real grade impossible to guess.
- [Citation Generator](https://toolbux.online/tools/student-tools/citation-generator): Formats references in APA 7, MLA 9, Chicago, Harvard and IEEE. Problem solved: Manual citation formatting is slow and full of tiny errors.
- [Bibliography Generator](https://toolbux.online/tools/student-tools/bibliography-generator): Builds a full, sorted reference list from many sources. Problem solved: A reference list takes longer than the essay's last chapter.
- [CGPA to Percentage](https://toolbux.online/tools/student-tools/cgpa-to-percentage): Converts CGPA to percentage using common university formulas. Problem solved: Job and admission forms ask for the other format.
- [Study Planner](https://toolbux.online/tools/student-tools/study-planner): Turns an exam date and topics into a day-by-day plan. Problem solved: Students cram because they never made a realistic plan.
- [Flashcards Maker](https://toolbux.online/tools/student-tools/flashcards-maker): Creates simple flip cards from questions and answers. Problem solved: Re-reading notes does not test memory; flashcards do.
- [Thesis Statement Generator](https://toolbux.online/tools/student-tools/thesis-generator): Helps build a clear one-sentence thesis from a topic. Problem solved: A weak thesis makes the whole essay drift.
- [Reading Time Calculator](https://toolbux.online/tools/student-tools/reading-time-calculator): Estimates how long a text takes to read or present. Problem solved: Students misjudge reading load and presentation length.

## Timer, Clock & Focus Tools — A timer page for every real situation — classroom, kitchen, gym, exam — that keeps working in a background tab.
- [Online Timer](https://toolbux.online/tools/timer-tools/online-timer): Counts down any duration with an alarm and full-screen mode. Problem solved: Phone timers are fiddly in class, kitchen and meetings.
- [Stopwatch with Laps](https://toolbux.online/tools/timer-tools/stopwatch): Times events and records lap and split times. Problem solved: Training and experiments need splits, not just a total.
- [Pomodoro Timer](https://toolbux.online/tools/timer-tools/pomodoro-timer): Runs 25-minute focus blocks with short breaks. Problem solved: Study and work sessions drift without a structure.
- [Interval / Tabata Timer](https://toolbux.online/tools/timer-tools/interval-timer): Alternates work and rest rounds for workouts. Problem solved: HIIT training is impossible to time by watching a clock.
- [Countdown to Date](https://toolbux.online/tools/timer-tools/countdown-to-date): Counts days, hours and minutes to an event. Problem solved: Exams, launches and holidays need a live countdown to share.
- [World Clock](https://toolbux.online/tools/timer-tools/world-clock): Shows current time in major cities at once. Problem solved: Remote teams keep misreading each other's time zones.
- [Time Zone Converter](https://toolbux.online/tools/timer-tools/timezone-converter): Converts a meeting time between cities and zones. Problem solved: One wrong conversion means a missed call.
- [Days Between Dates](https://toolbux.online/tools/timer-tools/days-between-dates): Counts days between two dates, including working days option. Problem solved: Deadlines and leave planning need exact day counts.
- [Online Alarm Clock](https://toolbux.online/tools/timer-tools/online-alarm-clock): Sets an alarm that rings in the browser at a chosen time. Problem solved: Laptops need a backup alarm when the phone is away.
- [Metronome](https://toolbux.online/tools/timer-tools/metronome): Plays a steady beat at any BPM for music practice. Problem solved: Musicians drift off tempo without a click track.

## Username & Name Generators — Generate the name and prove it is free on every platform — in one visit, not five.
- [Username Generator](https://toolbux.online/tools/username-generators/username-generator): Creates username ideas from keywords, style and length. Problem solved: Every good name feels taken; people freeze at signup.
- [Instagram Username Generator](https://toolbux.online/tools/username-generators/instagram-username-generator): Makes aesthetic, cute or professional Instagram names. Problem solved: Creators need a name that fits their niche and is memorable.
- [TikTok Username Generator](https://toolbux.online/tools/username-generators/tiktok-username-generator): Creates short, catchy TikTok handles within platform rules. Problem solved: TikTok names must be short and unique to get noticed.
- [Gamertag Generator](https://toolbux.online/tools/username-generators/gamertag-generator): Creates Xbox, PSN and Steam-style gamer names. Problem solved: Gamers need an original tag that is not already claimed.
- [YouTube Channel Name Generator](https://toolbux.online/tools/username-generators/youtube-channel-name-generator): Suggests channel names by niche: gaming, vlog, tech, food. Problem solved: A channel name decides first impressions and search clicks.
- [Fantasy Name Generator](https://toolbux.online/tools/username-generators/fantasy-name-generator): Creates character names for stories, games and D&D. Problem solved: Writers and players stall when naming characters.
- [Team Name Generator](https://toolbux.online/tools/username-generators/team-name-generator): Suggests sports, quiz and work team names by theme. Problem solved: Groups waste the first meeting arguing over a name.
- [Username Availability Checker](https://toolbux.online/tools/username-generators/username-availability-checker): Checks a name across major platforms in one search. Problem solved: Checking 6 apps one by one to keep one identity is painful.
- [Nickname Generator](https://toolbux.online/tools/username-generators/nickname-generator): Creates short nicknames from a real name. Problem solved: Friends and gamers want a short form that still feels personal.
- [Business Name Generator](https://toolbux.online/tools/username-generators/business-name-generator-2): Links into the business hub: brand names plus domain check. Problem solved: Founders need one flow from idea to available domain.

## Health & Fitness Calculators — The exact calculator for the exact person — by age, gender and goal — with the formula shown.
- [BMI Calculator](https://toolbux.online/tools/health-fitness/bmi-calculator): Calculates body mass index and its healthy range category. Problem solved: People need a first signal on whether their weight is healthy.
- [BMR Calculator](https://toolbux.online/tools/health-fitness/bmr-calculator): Estimates calories burned at complete rest. Problem solved: Every diet plan starts from this number and most guess it.
- [TDEE Calculator](https://toolbux.online/tools/health-fitness/tdee-calculator): Adds activity level to BMR for true daily calorie needs. Problem solved: Eating to BMR alone under-fuels active people.
- [Calorie Deficit Calculator](https://toolbux.online/tools/health-fitness/calorie-deficit-calculator): Shows daily calories for a chosen weekly weight-loss pace. Problem solved: Random restriction is unsafe and unsustainable.
- [Macro Calculator](https://toolbux.online/tools/health-fitness/macro-calculator): Splits calories into protein, carbs and fat grams. Problem solved: Total calories alone do not build a workable meal plan.
- [Body Fat Calculator](https://toolbux.online/tools/health-fitness/body-fat-calculator): Estimates body fat percentage from measurements (Navy method). Problem solved: BMI cannot tell muscle from fat; athletes need better.
- [Ideal Weight Calculator](https://toolbux.online/tools/health-fitness/ideal-weight-calculator): Shows a healthy weight range for height and frame. Problem solved: People chase a single magic number instead of a range.
- [Pregnancy Due Date Calculator](https://toolbux.online/tools/health-fitness/due-date-calculator): Estimates due date and current week from last period. Problem solved: Expecting parents want milestones without waiting for a scan.
- [Ovulation / Period Calculator](https://toolbux.online/tools/health-fitness/ovulation-calculator): Predicts fertile window and next period dates. Problem solved: Cycle tracking by calendar maths is error-prone.
- [Pace / 1RM / Water Intake](https://toolbux.online/tools/health-fitness/pace-calculator): Running pace, gym max estimate and daily water target. Problem solved: Training plans need three numbers phones do not give easily.

## E-commerce Seller Tools — Every platform's profit maths on one screen, updated the week fees change — no signup, no suite pitch.
- [Amazon FBA Calculator](https://toolbux.online/tools/ecommerce-tools/amazon-fba-calculator): Shows profit after referral, FBA, storage and product costs. Problem solved: Sellers list products that secretly lose money on fees.
- [eBay Fee Calculator](https://toolbux.online/tools/ecommerce-tools/ebay-fee-calculator): Calculates final value and payment fees per sale. Problem solved: eBay's layered fees surprise new sellers at payout.
- [Etsy Fee Calculator](https://toolbux.online/tools/ecommerce-tools/etsy-fee-calculator): Adds listing, transaction, payment and ad fees into one total. Problem solved: Etsy's small fees stack up and quietly eat the margin.
- [Profit Margin Calculator](https://toolbux.online/tools/ecommerce-tools/profit-margin-calculator): Calculates margin and markup from cost and price. Problem solved: Sellers confuse margin with markup and underprice.
- [Discount Calculator](https://toolbux.online/tools/ecommerce-tools/discount-calculator-ecom): Shows sale price and profit left after a discount. Problem solved: Promotions can turn a good product into a loss.
- [Shipping Cost Estimator](https://toolbux.online/tools/ecommerce-tools/shipping-cost-estimator): Estimates shipping by weight, size and zone. Problem solved: Wrong shipping estimates destroy profit on heavy items.
- [Break-Even ROAS Calculator](https://toolbux.online/tools/ecommerce-tools/roas-calculator): Shows the ad return needed before a product loses money. Problem solved: Sellers scale ads without knowing their break-even point.
- [SKU Generator](https://toolbux.online/tools/ecommerce-tools/sku-generator): Creates consistent product codes from your own rules. Problem solved: Messy SKUs cause stock and warehouse chaos.
- [Product Title Checker](https://toolbux.online/tools/ecommerce-tools/product-title-checker): Checks title length and keyword stuffing per platform. Problem solved: Over-long or stuffed titles get truncated or suppressed.
- [PayPal Fee Calculator](https://toolbux.online/tools/ecommerce-tools/paypal-fee-calculator): Shows the fee taken and the amount to charge to net a target. Problem solved: Freelancers and sellers lose a cut they never calculated.

## Home & DIY Calculators — Not just a number — a printable shopping list with waste allowance, made for a phone in a store aisle.
- [Paint Calculator](https://toolbux.online/tools/home-diy/paint-calculator): Calculates litres or gallons and tins needed per room, minus doors and windows. Problem solved: Too little paint stops the job; too much wastes money.
- [Tile Calculator](https://toolbux.online/tools/home-diy/tile-calculator): Calculates tiles and boxes needed, with 10% waste allowance. Problem solved: Running out mid-floor risks a mismatched batch.
- [Flooring Calculator](https://toolbux.online/tools/home-diy/flooring-calculator): Calculates packs of laminate, vinyl or wood per room size. Problem solved: Flooring is sold by the pack, not by the square metre.
- [Concrete Calculator](https://toolbux.online/tools/home-diy/concrete-calculator): Calculates cubic volume and bags needed for a slab or footing. Problem solved: Concrete cannot be topped up easily once pouring starts.
- [Mulch Calculator](https://toolbux.online/tools/home-diy/mulch-calculator): Calculates bags or bulk mulch needed by area and depth. Problem solved: Garden beds need far more mulch than people guess.
- [Wallpaper Calculator](https://toolbux.online/tools/home-diy/wallpaper-calculator): Calculates rolls needed, allowing for pattern repeat. Problem solved: Pattern matching wastes paper most people forget to count.
- [BTU / Room Size Calculator](https://toolbux.online/tools/home-diy/btu-calculator): Recommends heater or AC size for a room. Problem solved: Wrong-sized units waste energy and never feel comfortable.
- [Stair Calculator](https://toolbux.online/tools/home-diy/stair-calculator): Calculates riser height, tread and step count. Problem solved: Stairs must meet comfort and code rules, not guesses.
- [Square Footage Calculator](https://toolbux.online/tools/home-diy/square-footage-calculator): Calculates area of rooms and irregular shapes. Problem solved: Every other home calculation starts with a correct area.
- [Renovation Budget Planner](https://toolbux.online/tools/home-diy/renovation-budget-planner): Totals project items into one budget with contingency. Problem solved: Renovations overrun because small costs were never added up.

## Random / Picker / Decision Tools — The wheel plus everything around it — teams, brackets, saved classes and shareable winner links.
- [Random Number Generator](https://toolbux.online/tools/random-picker-tools/random-number-generator): Generates numbers in any range, with no-repeats option. Problem solved: Draws, games and sampling need fair numbers instantly.
- [Wheel of Names](https://toolbux.online/tools/random-picker-tools/wheel-of-names): Spins a colourful wheel of names and lands on a winner. Problem solved: Picking by hand looks biased; a wheel feels fair and fun.
- [Random Name Picker](https://toolbux.online/tools/random-picker-tools/random-name-picker): Picks one or more names from a pasted list. Problem solved: Teachers need a fair way to choose who answers.
- [Coin Flip](https://toolbux.online/tools/random-picker-tools/coin-flip): Flips a virtual coin — heads or tails, with streak stats. Problem solved: Quick decisions and games need a coin nobody carries anymore.
- [Dice Roller](https://toolbux.online/tools/random-picker-tools/dice-roller): Rolls any number of dice, including D&D dice (d20, d100). Problem solved: Board and role-play games stall when the dice are lost.
- [Team Generator](https://toolbux.online/tools/random-picker-tools/team-generator): Splits a list into balanced random teams or groups. Problem solved: Hand-picked teams cause arguments and unfair sides.
- [Random Letter Generator](https://toolbux.online/tools/random-picker-tools/random-letter-generator): Generates random letters for games and passwords. Problem solved: Word games and tests need unbiased letters.
- [List Shuffler](https://toolbux.online/tools/random-picker-tools/list-shuffler): Randomises the order of any pasted list. Problem solved: Playlists, rosters and queues need a fair random order.
- [Bracket Generator](https://toolbux.online/tools/random-picker-tools/bracket-generator): Builds a tournament bracket from team names. Problem solved: Running a knockout cup on paper is messy and error-prone.
- [Yes / No Decision Picker](https://toolbux.online/tools/random-picker-tools/yes-no-picker): Answers a question with a fun random yes, no or maybe. Problem solved: Small decisions stall people; a playful nudge breaks the tie.

## Notes
- Health, salary and tax tools give estimates only, not medical, financial or tax advice.
- The AI detector gives a heuristic estimate, not a verdict. The plagiarism checker checks your own text locally and does not search the whole internet.
- Citation tools format what the user enters; they do not verify the source.
- Video tools work only on files the user uploads; ToolBux does not download YouTube videos.