Tools that keep your files on your device
200 utilities for developers, students, engineers and small businesses. Each one does its work in your browser, so documents, photos and data are never uploaded.
200 tools
Developer
Formatters, encoders and inspectors for everyday programming work.
- JSON Formatter & Validator Format, validate, minify or key sort JSON with clear error messages. Runs in your browser, so API responses and configs never leave your device.
- Base64 Encoder & Decoder Encode text to Base64 or Base64URL and decode it back, with full UTF-8 support for accents, Urdu script and emoji.
- URL Encoder & Decoder Percent encode or decode URL components and full URLs. Handles Unicode and reports malformed escape sequences instead of failing silently.
- JWT Decoder Decode a JSON Web Token header and payload, convert iat, nbf and exp to readable dates, and see whether it has expired. Tokens stay on your device.
- SHA Hash Generator Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text using the browser Web Crypto API. Nothing you type is uploaded.
- UUID v4 Generator Generate up to 1,000 random version 4 UUIDs at once using a cryptographically secure random source, in lowercase, uppercase or without hyphens.
- Regex Tester Test JavaScript regular expressions against sample text and list every match with its position and capture groups.
- Unix Timestamp Converter Convert Unix timestamps in seconds or milliseconds to ISO 8601, UTC and local time, or turn a date string back into a timestamp.
- JSON to CSV Converter Convert a JSON array of objects into a CSV file. Nested objects become dot notation columns and formula like cells are neutralised for spreadsheets.
- CSV to JSON Converter Parse CSV (quoted fields, embedded commas and line breaks included) into a JSON array, using the header row as keys and optional type inference.
- HTML Entity Encoder & Decoder Escape text for safe use inside HTML, encode every non-ASCII character as a numeric entity, or decode named and numeric entities back to text.
- Diff Checker Compare two texts line by line and see exactly which lines were added or removed, with an option to ignore whitespace changes.
- Cron Expression Explainer Translate a five field cron expression into plain English and list its next scheduled run times in your local time zone.
- Number Base Converter Convert integers of any size between binary, octal, decimal, hexadecimal and base 36 using exact BigInt arithmetic.
- JSON to TypeScript Interfaces Generate TypeScript interfaces from a sample JSON payload, with nested types, optional properties inferred from arrays, and safe property names.
- IPv4 Subnet Calculator (CIDR) Calculate network address, broadcast, usable host range, subnet mask, wildcard mask and host count from any IPv4 address and CIDR prefix.
- Chmod Calculator (Linux Permissions) Convert Linux file permissions between octal (755) and symbolic (rwxr-xr-x) notation and see exactly who can read, write and execute.
- YAML ⇄ JSON Converter Convert YAML to JSON and JSON to YAML for Kubernetes manifests, GitHub Actions, Docker Compose and config files, with clear parse errors.
- SQL Formatter Beautify messy SQL queries with consistent indentation and keyword case for MySQL, PostgreSQL, SQL Server, SQLite and more.
- CSS & JavaScript Minifier Minify JavaScript with Terser and CSS with a safe whitespace and comment remover, and see how many bytes and percent you save.
- CSS Gradient Generator Build linear and radial CSS gradients from up to five colours, preview them, and copy ready to use CSS for backgrounds and buttons.
- HTTP Status Code Lookup Look up what any HTTP status code means, from 200 OK and 301 redirects to 404, 429 and 503, with practical notes for debugging.
- User Agent Parser Parse a browser user agent string into browser, version, operating system, rendering engine and device type. Shows your own by default.
- XML Formatter & Validator Pretty print and validate XML for sitemaps, RSS feeds, SOAP and config files, with clear well formedness errors. Parsed safely, never executed.
- Password Strength Checker Check how strong a password is with an entropy estimate, common password and pattern detection, and an estimated offline cracking time.
Image
Resize, convert and clean up images without uploading them.
- Image Compressor Reduce JPEG and WebP file size by choosing a quality level, with before and after sizes shown. Images are compressed in your browser, not on a server.
- Image Resizer Resize an image to exact pixel dimensions or to a width or height while keeping its proportions. High quality smoothing, processed locally.
- Image Format Converter Convert images between PNG, JPEG and WebP, including GIF, BMP and AVIF input. Transparent areas get a white background when saving as JPEG.
- Image Cropper Crop an image to an exact pixel rectangle, or to a centred aspect ratio such as 1:1, 4:3 or 16:9. Precise, keyboard friendly and local.
- Rotate & Flip Image Rotate an image by 90, 180 or 270 degrees and flip it horizontally or vertically. Also fixes sideways phone photos by applying EXIF orientation.
- Image to Base64 Data URI Convert an image file into a Base64 data URI, CSS background rule or HTML img tag for embedding small icons directly in code.
- Image Filters (Grayscale, Sepia, Invert) Apply grayscale, sepia, invert, brightness or contrast adjustments to an image and download the result. Pixel maths runs entirely in your browser.
- Favicon Generator Create favicon.ico plus 16, 32, 180, 192 and 512 px PNG icons from one square image, with the HTML link tags to paste into your site head.
- Image Colour Palette Extractor Extract the dominant colours from a photo or logo as hex codes with their share of the image, ready to paste into CSS or design tools.
- Add Text Watermark to Image Stamp a text watermark on a photo in any corner, the centre, or tiled across the whole image, with adjustable size, colour and opacity.
- Image Metadata (EXIF) Remover See whether a JPEG or PNG carries EXIF, GPS, XMP or text metadata, then download a clean copy with all of it removed. Fully local.
- Placeholder Image Generator Create placeholder images at any size with custom colours and label text, as SVG or PNG, for wireframes, mockups and layout testing.
Merge, split and edit PDF files locally in your browser.
- Merge PDF Combine several PDF files into one document in the order you choose. Files are merged in your browser, so contracts and statements stay private.
- Split PDF Split a PDF into single pages, fixed size parts, or custom page ranges, and download each part as its own PDF file.
- Extract PDF Pages Pull selected pages out of a PDF into a new single document, using page numbers and ranges such as 1-3, 7, 10-12.
- Delete PDF Pages Remove blank, duplicate or unwanted pages from a PDF by page number or range and download the cleaned document.
- Rotate PDF Rotate all pages or selected pages of a PDF by 90, 180 or 270 degrees and save the result permanently.
- JPG & PNG to PDF Turn photos and scans in JPEG or PNG format into a single PDF, one image per page, on A4, Letter or image sized pages.
- Add Page Numbers to PDF Stamp page numbers on every page of a PDF, choosing the position, start number and format such as "Page {n} of {total}".
- Watermark PDF Add a text watermark such as CONFIDENTIAL or DRAFT across every page of a PDF, with control over size, colour, opacity and angle.
- PDF Metadata Viewer & Editor View a PDF’s title, author, creator software and dates, then edit or clear them before you share the file.
- Reorder PDF Pages Rearrange the pages of a PDF into any order, reverse it, or duplicate pages, by typing the new page sequence.
Text & writing
Count, clean, transform and analyse written text.
- Word & Character Counter Count words, characters with and without spaces, sentences, paragraphs and lines, with reading and speaking time estimates. Works with Urdu and emoji.
- Case Converter Convert text to UPPER, lower, Title Case, Sentence case, camelCase, PascalCase, snake_case, CONSTANT_CASE or kebab-case in one click.
- Remove Duplicate Lines Delete repeated lines from a list while keeping the first occurrence and original order, with options to ignore case and surrounding spaces.
- Sort Lines Sort lines alphabetically, in reverse, by the number they contain, or by length, or shuffle them with a secure random source.
- Lorem Ipsum Generator Generate lorem ipsum placeholder text by paragraphs, sentences or words, optionally starting with the classic "Lorem ipsum dolor sit amet".
- Find and Replace Find and replace text in bulk with options for whole words, case insensitive matching and regular expressions with $1 capture references.
- Whitespace & Invisible Character Cleaner Trim lines, collapse repeated spaces, remove blank lines and strip invisible zero width and nonbreaking spaces from copied text.
- Readability Score Checker Measure how easy English text is to read with Flesch Reading Ease, Flesch Kincaid Grade, Gunning Fog and Coleman Liau scores.
- Word Frequency Counter List the most frequent words in a text with counts and percentages, optionally ignoring common English stop words. Export the table as CSV.
- Markdown to HTML Converter Convert GitHub flavoured Markdown (tables, task lists, fenced code) into clean HTML you can paste into a CMS or email template.
- Text to Speech Read any text aloud with natural voices built into your device. Choose voice, speed and pitch, and pause or resume at any time. Free, no sign up.
- Speech to Text (Online Dictation) Dictate text with your voice and watch it appear as you speak, in many languages. Copy or download the transcript when you are done.
- Typing Speed Test Test your typing speed in words per minute and accuracy with a 30, 60 or 120 second test on common English words. Track your best score.
- Word Unscrambler Unscramble letters into every English word you can make, grouped by length, with ? for blank tiles. Perfect for Scrabble, Words with Friends and anagrams.
- Crossword Solver (Pattern Finder) Find words that fit a crossword pattern like c?o?s?o?d, using ? for unknown letters and * for any number of letters.
- Random Word Generator Generate random English words by length and starting letter for games, brainstorming, writing prompts and creative naming.
- Username Generator Generate unique, memorable usernames for games, social media and new accounts, optionally built around your name or a keyword.
- Unicode Character Lookup Inspect any character or emoji: Unicode code point, decimal value, UTF-8 and UTF-16 bytes and HTML entity. Find hidden and invisible characters.
- Text to Handwriting Turn typed text into a realistic handwritten page on lined or plain paper, with ink colour choices, and download it as an image.
- Strikethrough & Underline Text Generator Create s̶t̶r̶i̶k̶e̶t̶h̶r̶o̶u̶g̶h̶, u̲n̲d̲e̲r̲l̲i̲n̲e̲d̲ and slashed text with Unicode combining marks, ready to paste into posts and bios.
SEO
Generate and check the markup search engines read.
- Meta Tag & Open Graph Generator Generate title, meta description, canonical, Open Graph and Twitter Card tags for a page, with length warnings based on how search results display.
- URL Slug Generator Turn titles into clean, lowercase URL slugs: accents removed, symbols stripped, optional stop word removal and a maximum length that never cuts a word in half.
- Robots.txt Generator Build a valid robots.txt with disallowed paths, a sitemap reference, an optional crawl delay and optional rules blocking known AI training crawlers.
- XML Sitemap Generator Create a valid sitemap.xml from a list of URLs. Duplicates are removed, URLs are XML-escaped and entries from other domains are flagged.
- Google SERP Snippet Preview Preview how a title and meta description may be truncated in Google desktop results, using an approximate pixel width model rather than plain character counts.
- Keyword Density Checker Count how often words and two- or three word phrases appear in your copy and check the density of a target keyword, to catch stuffing or missing topics.
- FAQ Schema Generator Turn questions and answers into valid FAQPage JSON-LD structured data, safely escaped for embedding in a script tag.
- Hreflang Tag Generator Generate hreflang link tags for multilingual or multiregional pages, with validation of language region codes and an optional x-default.
- Heading Structure Checker Paste a page’s HTML source to see its H1 to H6 outline, skipped heading levels, title, meta description, canonical and images missing alt text.
- .htaccess Redirect Generator Generate Apache .htaccess rules for 301 or 302 page redirects, forcing HTTPS and adding or removing www, for cPanel and Hostinger hosting.
Student & maths
Calculators that show their working, for coursework and revision.
- Scientific Expression Calculator Evaluate expressions such as 2sin(30) + sqrt(16)/3 with trig, logs, powers and factorials, in degrees or radians, without using eval.
- Quadratic Equation Solver Solve ax² + bx + c = 0 with full working: the formula, substituted values, discriminant and real or complex roots, step by step.
- Percentage Calculator Work out X% of Y, what percent one number is of another, percentage increase or decrease, and add or subtract a percentage, with the working shown.
- GPA & CGPA Calculator (4.0 scale) Calculate semester GPA and updated CGPA from letter grades and credit hours on the 4.0 scale used by FAST NUCES and many other universities.
- Matrix Calculator Compute the determinant, inverse, transpose or product of matrices up to 8 × 8 using partial pivoting for numerical stability.
- System of Linear Equations Solver Solve 2 to 8 simultaneous linear equations by entering the augmented matrix. Detects singular systems with no unique solution.
- Descriptive Statistics Calculator Get mean, median, mode, range, quartiles, variance and standard deviation (sample and population) for a list of numbers.
- Prime Factorisation & Primality Checker Check whether a whole number is prime and break it into prime factors in exponent form, with exact BigInt arithmetic for very large numbers.
- GCD & LCM Calculator Find the greatest common divisor and least common multiple of two or more whole numbers, with the Euclidean algorithm steps for the first pair.
- Fraction Calculator Add, subtract, multiply and divide fractions, mixed numbers and decimals, with results simplified to lowest terms and shown as mixed numbers.
- Definite Integral Calculator (Numerical) Numerically evaluate a definite integral of f(x) between two limits using Simpson’s rule, with the formula, step size and a trapezoidal cross check.
- Permutation & Combination Calculator Calculate nPr and nCr (combinations) exactly for large n using BigInt, plus factorials, with the formulas and substituted values shown.
Electrical & engineering
Circuit, signal and wiring calculations for labs and projects.
- Ohm’s Law & Power Calculator Enter any two of voltage, current, resistance and power to find the other two, using V = IR and P = VI with SI prefixes like 4.7k and 20m.
- Resistor Colour Code Calculator Decode 4-band and 5-band resistor colour codes into resistance and tolerance, or find the colour bands for a given resistance value.
- Voltage Divider Calculator Calculate the output voltage, current and resistor power of a two resistor divider, including the loading effect of a connected load.
- Series & Parallel Resistor, Capacitor & Inductor Calculator Find the equivalent series and parallel value of any number of resistors, capacitors or inductors, with SI prefix input and output.
- RC and RL Filter Cutoff Calculator Calculate the −3 dB cutoff frequency and time constant τ of first order RC and RL filters, plus the 5τ settling time.
- LED Series Resistor Calculator Find the series resistor for one or more LEDs from supply voltage, forward voltage and current, with the next standard E12 value and power ratings.
- AC Power Calculator (Single & Three Phase) Calculate real (W), reactive (VAR) and apparent (VA) power and phase angle for single- or three phase loads from voltage, current and power factor.
- Decibel (dB, dBm) Calculator Convert power and voltage ratios to decibels and back, and convert between dBm and watts, with the logarithm formula shown for each answer.
- AWG Wire Gauge Calculator Convert American Wire Gauge (AWG 0000 to 40) to diameter, cross sectional area in mm² and copper resistance per kilometre, plus voltage drop for a run.
- Frequency to Wavelength Calculator Convert frequency to wavelength (λ = v/f) for radio, microwave and transmission lines, with velocity factor, half wave and quarter wave antenna lengths.
Business
Pricing, finance and scheduling calculators for small teams.
- Invoice Generator (PDF) Create a clean, professional PDF invoice with line items, discount, tax and notes. Generated in your browser, no sign up, no watermark, no data stored.
- Profit Margin & Markup Calculator Calculate profit, gross margin and markup from cost and price, or find the selling price needed to hit a target margin, and see why margin and markup differ.
- Break Even Point Calculator Find how many units you must sell to cover fixed costs, from fixed costs, unit price and variable cost per unit, with contribution margin and revenue.
- Sales Tax, VAT & GST Calculator Add tax to a net price or extract tax from a tax inclusive price at any rate, GST, VAT, HST or sales tax, with net, tax and gross amounts.
- Loan EMI & Amortisation Calculator Calculate the monthly instalment (EMI), total interest and full amortisation schedule for a loan, and download the schedule as CSV.
- ROI & Annualised Return Calculator Calculate return on investment and, if you enter the holding period, the annualised return (CAGR) so investments of different lengths compare fairly.
- Freelance Hourly Rate Calculator Work out the hourly rate you need as a freelancer from your income goal, expenses, tax and realistic billable hours, not the hours you are at your desk.
- Time Zone Meeting Planner Convert one meeting time across several time zones at once, with daylight saving handled correctly, and see who is inside normal working hours.
- Working Days Calculator Count business days between two dates, excluding weekends of your choice (Saturday and Sunday, or Friday and Saturday) and a list of public holidays.
- Startup Runway Calculator Estimate how many months your cash lasts from current balance, monthly costs, revenue and revenue growth, with a month by month projection.
Leads & site analysis
Clean contact lists, build tracked links, inspect site headers.
- Email, Phone & Link Extractor Pull every email address, phone number and URL out of pasted text, documents or page source, deduplicated and ready to export.
- UTM Campaign Link Builder Build Google Analytics UTM-tagged campaign URLs with source, medium, campaign, term and content, normalised to lowercase so reports stay clean.
- Lead Scoring Calculator Score a sales lead from 0 to 100 using your own weighted criteria such as budget, authority, need and timeline, and get a hot, warm or cold rating.
- Contact List CSV Cleaner Clean a contacts CSV: remove duplicate emails, trim spaces, fix name capitalisation and drop invalid addresses, with spreadsheet safe output.
- Email Address Syntax Validator Check a list of email addresses for syntax errors, common domain typos (gmial.com), disposable providers and role based addresses before you send.
- HTTP Security Headers Checker Grade a website’s HTTP security headers, HSTS, CSP, X-Frame-Options, Referrer-Policy, cookies, from pasted headers or by fetching a public URL.
Everyday
Quick converters and generators for daily tasks.
- Age Calculator Calculate exact age in years, months and days from a date of birth, plus total days and weeks lived and days until the next birthday.
- Unit Converter Convert length, mass, area (including kanal and marla), volume, speed, data size, time and temperature, showing every unit in the category at once.
- Secure Password Generator Generate strong random passwords with a cryptographically secure source, unbiased sampling and guaranteed character types, plus an entropy estimate.
- Tip Calculator & Bill Splitter Add a tip and split a restaurant or group bill evenly between people, with an option to round each share up to a whole number.
- QR Code Generator Create QR codes for links, text, Wi-Fi networks, phone numbers and email, download as PNG or SVG, and choose colours and error correction.
Time & productivity
Timers, clocks, notes and lists that stay in your browser.
- Online Timer A free countdown timer with one click presets from 1 minute to 1 hour, a loud alarm, fullscreen view and keyboard shortcuts. No sign up or install.
- Online Stopwatch with Laps An accurate online stopwatch with lap times, split differences, keyboard control and CSV export of your laps. Works offline once loaded.
- Online Alarm Clock Set an alarm for any time today or tomorrow, with a label and a choice of sounds. Runs in your browser tab with nothing to install.
- Pomodoro Timer A Pomodoro focus timer with 25 minute work sessions, short and long breaks, adjustable lengths and a count of completed sessions.
- Countdown to a Date Count down the days, hours, minutes and seconds to any date, such as Christmas, an exam or a launch, and share the countdown as a link.
- World Clock See the current time in New York, London, Dubai, Tokyo and any other city at a glance, with daylight saving handled automatically.
- What Week Is It? (ISO Week Number) Find the current ISO 8601 week number, or the week number of any date, with the week’s start and end dates and weeks left in the year.
- Add or Subtract Days from a Date Add or subtract days, weeks, months, years or business days from any date to find deadlines, due dates and notice periods.
- Online Notepad A distraction free online notepad that saves automatically in your browser, with word count, multiple notes and download as a text file.
- To Do List A simple to do list that remembers your tasks in your browser. Add, tick off, reorder and clear tasks with no account or app.
- Habit Tracker Track daily habits on a simple weekly grid with streak counts. Tick each day you do it; everything is saved privately in your browser.
- Sticky Notes Board Post colour coded sticky notes on a board for ideas, reminders and quick plans. Notes save automatically in your browser.
- Printable Calendar Generator (PDF) Create a clean 12-month printable calendar PDF for any year, starting weeks on Monday or Sunday, with an optional title on every page.
- Hours Worked & Time Card Calculator Add up hours worked from start and end times with unpaid breaks, including overnight shifts, and get weekly totals in hours and decimals.
- Military Time Converter Convert 24-hour military time such as 1730 to standard 5:30 PM and back, with a full military time chart for quick reference.
Quick utilities
Random pickers, symbols, colours and small converters.
- What Is My IP Address? See your public IP address instantly, check whether it is IPv4 or IPv6, and copy it with one click. No tracking, no logging.
- Random Number Generator Generate random numbers in any range, one or many at a time, with no repeats if you need them. Uses a cryptographically secure random source.
- Flip a Coin Flip a fair virtual coin once or up to 1,000 times and see heads and tails counts with percentages. Settle decisions instantly.
- Dice Roller Roll any number of dice with any number of sides, such as 2d6 or 1d20, with a modifier, individual results and the total.
- Spin the Wheel (Random Name Picker) Enter names or options, spin a colourful wheel and get a fair random winner. Remove winners between spins. Great for classrooms and giveaways.
- Random Team Generator Split a list of names into balanced random teams or groups in one click. Paste names, choose the number of teams and shuffle again anytime.
- Copy and Paste Symbols Copy special characters with one click: arrows, check marks, stars, currency, maths, Greek letters, bullets and more. Search by name.
- Emoji Picker Search and copy emojis by name or category on any device, including desktop computers with no emoji keyboard.
- Colour Picker & Converter (HEX, RGB, HSL) Pick a colour or paste a value and convert between HEX, RGB and HSL, with tints and shades ready to copy into CSS or design tools.
- Colour Contrast Checker (WCAG) Check the contrast ratio between text and background colours against WCAG 2.2 AA and AAA for normal and large text.
- Online Tally Counter A big, simple click counter for counting people, laps, stitches or anything else. Count up and down with keys, run several counters at once.
- Roman Numeral Converter Convert numbers to Roman numerals and back, from 1 to 3999, with validation that catches invalid forms like IIII or VX.
- Morse Code Translator Translate text to International Morse code and Morse back to text, with letters, numbers and punctuation. Slash separates words.
- Binary to Text Converter Convert text to 8-bit binary and binary back to readable text using UTF-8, so accented letters and emoji work in both directions.
- Fancy Text Generator Turn plain text into bold, italic, script, circled, monospace and upside down Unicode text you can paste into Instagram, X and TikTok bios.
Device tests
Check your microphone, camera, keyboard, screen and sound.
- Microphone Test Test your microphone online in seconds: see a live level meter, choose between microphones, and play back a short recording to hear yourself.
- Webcam Test Check your webcam online with a live preview, camera selection, resolution and frame rate readout, and a snapshot you can download.
- Keyboard Tester Press every key and see it light up on a full keyboard layout to find dead or sticking keys, with key codes and rollover testing.
- Click Speed Test (CPS) Measure your clicks per second over 5, 10 or 30 seconds, and keep your best score. Also useful for checking a mouse for double clicking.
- Dead Pixel Test Fill your screen with pure red, green, blue, white and black to spot dead, stuck or hot pixels and backlight bleed on monitors and phones.
- Screen Resolution & Browser Info See your screen resolution, viewport size, device pixel ratio, colour depth, browser, operating system and language, all detected locally.
- Online Metronome A precise online metronome from 30 to 300 BPM with time signatures, an accented first beat, tap tempo and keyboard control.
- Online Guitar Tuner Tune a guitar, bass, ukulele or violin with your microphone. Shows the detected note and how many cents sharp or flat you are.
- Tone Generator (Frequency Generator) Play a pure sine, square, triangle or sawtooth tone at any frequency from 20 Hz to 20 kHz to test speakers, headphones and hearing range.
- Sound Level Meter (dB) Measure relative sound levels with your microphone, with a live meter, peak and average. Shows dBFS, which is not a calibrated SPL reading.
Media & files
Record, convert and extract from audio, video, PDF and images.
- Compress Image to a Target Size (KB) Shrink a photo to under a target file size such as 100 KB, 50 KB or 20 KB for online forms, automatically finding the best quality that fits.
- PDF to JPG / PNG Convert every page of a PDF into high quality JPG or PNG images at the resolution you choose, rendered privately in your browser.
- PDF to Text Extractor Extract the text from a PDF page by page and copy or download it as a .txt file. Works on digital PDFs; use OCR for scanned ones.
- Compress PDF (Scanned & Image PDFs) Reduce the size of scanned and image heavy PDFs by rerendering pages as optimised JPEG images at the quality you choose.
- Image to Text (OCR) Extract editable text from photos, screenshots and scanned documents with OCR that runs entirely in your browser. No upload, no account.
- Remove Solid Background (Make Transparent) Turn a white, green screen or other solid colour background transparent and download a PNG. Ideal for logos, signatures and product shots.
- Online Screen Recorder Record your screen, a window or a browser tab with optional microphone audio, then preview and download the video. No install, no watermark.
- Online Voice Recorder Record your voice from the microphone with a live level meter, pause and resume, playback, and download as a WAV or WebM file.
- Audio Cutter & Trimmer Trim an MP3, WAV, M4A, OGG or FLAC file to the section you want, with optional fade in and out, and save it as WAV. Great for ringtones.
- Video to GIF Converter Turn a short section of an MP4 or WebM video into an animated GIF with your choice of width and frame rate. Converted in your browser.
- Video Frame Grabber (Screenshot from Video) Save a full resolution still image from any moment of an MP4 or WebM video, as PNG or JPG. Grab one frame or a set of evenly spaced frames.
- Extract Audio from Video Pull the soundtrack out of an MP4, MOV or WebM video and save it as a WAV audio file, for the whole video or a selected section.
- SVG to PNG Converter Convert SVG vector graphics to sharp PNG images at any size, with a transparent or solid background. Scripts inside SVG files never run.
- Photo Collage Maker Combine up to 16 photos into a neat grid collage with your choice of columns, spacing and background colour, then download it as JPG.
- Meme Generator Add classic bold top and bottom captions to your own image to make a meme, with automatic text sizing and wrapping, and download it.
Health & fitness
Body, training and sleep calculators with the formulas shown.
- BMI Calculator Calculate your body mass index in metric or US units, see the WHO category and the healthy weight range for your height.
- Calorie Calculator (TDEE) Estimate how many calories you burn per day (TDEE) with the Mifflin-St Jeor equation, plus targets to maintain, lose or gain weight steadily.
- Sleep Calculator Find the best time to go to bed or wake up so you finish complete 90-minute sleep cycles and wake up feeling less groggy.
- Water Intake Calculator Estimate how much water to drink each day from your weight, exercise and climate, in litres, glasses and ounces.
- Body Fat Calculator (US Navy Method) Estimate body fat percentage from height, neck, waist and hip measurements using the US Navy formula, with fat and lean mass.
- Macro Calculator Split a daily calorie target into protein, carbohydrate and fat grams using a balanced, higher protein or lower carb ratio.
- Running Pace Calculator Work out running pace per km or mile from distance and time, or predict a finish time for 5K, 10K, half marathon and marathon.
- One Rep Max Calculator Estimate your one rep max from any set of up to 12 reps using the Epley, Brzycki and Lombardi formulas, with a percentage training table.
- Ideal Weight Calculator Compare ideal body weight estimates from the Devine, Robinson, Miller and Hamwi formulas alongside the healthy BMI range for your height.
- Pregnancy Due Date Calculator Estimate your baby’s due date from the first day of your last period or the conception date, with current week and trimester dates.
Personal finance
Loans, tax, savings and retirement calculators for the US and beyond.
- Compound Interest Calculator See how savings and investments grow with compound interest and regular deposits, with a year by year table of balance and interest earned.
- Mortgage Calculator with Taxes, Insurance & PMI Estimate your full monthly mortgage payment including principal, interest, property tax, homeowners insurance, PMI and HOA fees.
- US Federal Income Tax Calculator 2026 Estimate 2026 US federal income tax by bracket for single and married filers, with the standard deduction, effective rate and marginal rate.
- Credit Card Payoff Calculator See how long a credit card takes to pay off at a fixed payment and the interest you will pay, or the payment needed to be debt free by a date.
- US Paycheck Calculator (Take Home Pay) Estimate take home pay per paycheck after 2026 federal income tax, Social Security, Medicare, 401(k) and your state income tax rate.
- Hourly to Salary Converter Convert an hourly wage to annual, monthly, biweekly and weekly pay, or a salary back to an hourly rate, with your actual hours and weeks.
- Inflation & Purchasing Power Calculator See what an amount of money will cost in the future, or what it is worth in today’s money, at any inflation rate you choose.
- 401(k) Retirement Calculator Project your 401(k) balance at retirement with your contributions, employer match, salary growth and 2026 IRS contribution and catch up limits.
- Savings Goal Calculator Find out how much to save each month to reach a goal by a target date, including interest on your savings, or how long a monthly amount will take.
- Currency Converter (ECB Rates) Convert between 30 major currencies including USD, EUR, GBP, CAD, AUD, INR and JPY using the European Central Bank’s daily reference rates.
- Fuel Cost & Trip Calculator Work out the fuel cost of a road trip from distance, fuel economy and fuel price, in miles and MPG or kilometres and L/100 km, and split it between passengers.
- 50/30/20 Budget Calculator Split your monthly take home pay into needs, wants and savings with the 50/30/20 rule, and compare it with what you actually spend.
- Rent Affordability Calculator Find how much rent you can afford using the 30% rule and the 40× rent income test that many US landlords use, from your salary or monthly income.
- Debt Snowball & Avalanche Calculator Plan how to pay off several debts faster using the snowball (smallest balance first) or avalanche (highest interest first) method, with payoff dates.
- Net Worth Calculator Add up your assets and debts to calculate your net worth, with a breakdown you can update every few months to track progress.
No tools match that search. Try fewer or different words.