All Tools

Browse the full collection of 140 free tools, each on its own page. Pick a category below or use the search box on the homepage.

Toolbox

All 152 tools, organised

Pick a category, then open any tool on its own page.

Category

Calculators

Percentage CalculatorCalculate percentages, increase and decrease Age CalculatorCalculate exact age in years, months, weeks and days Discount CalculatorFind discount amount and final price GST CalculatorAdd or remove GST from an amount EMI CalculatorCalculate monthly loan repayments BMI CalculatorCalculate Body Mass Index from height and weight Date CalculatorAdd days to a date or find the difference between dates Time DurationFind hours and minutes between two times Tip CalculatorCalculate tip, total and amount per person Decimal to FractionConvert a decimal number to a reduced fraction Compound Interest CalculatorProject investment growth with compounding periods Profit Margin CalculatorFind margin, markup and profit from cost and price Salary Tax CalculatorEstimate take-home pay with progressive tax brackets Savings Goal CalculatorTime to reach a savings target with monthly deposits Break-Even CalculatorBreak-even units and revenue for a product or service Mean Median Mode CalculatorAverage, median, mode and sum of a number set Standard Deviation CalculatorPopulation and sample deviation with variance Percentile CalculatorPercentile rank of values and value at a percentile Z-Score CalculatorStandard score from value, mean and deviation Loan Payment CalculatorEstimate monthly payments, total cost and interest on a loan Percentage Change CalculatorWork out the percent increase or decrease between two values Date Difference CalculatorFind the exact number of days, weeks or months between two dates Compound Growth CalculatorProject growth and find the compound annual growth rate (CAGR) Simple Interest CalculatorWork out simple interest and the total to repay on any loan Fuel Cost CalculatorEstimate fuel usage and trip cost in miles or kilometres
Category

Text Tools

Word CounterCount words, characters, sentences and reading time Character CounterCount characters, words and lines in real time Case ConverterConvert text between uppercase, lowercase and more Remove Extra SpacesClean up extra spaces and trim text Duplicate Line RemoverRemove duplicate lines from text Text ReverserReverse characters, words or lines of text Text to SlugCreate SEO-friendly URL slugs from any text Text Diff CheckerCompare two texts and highlight differences Binary Text ConverterConvert text to binary and binary back to text Email ExtractorPull all email addresses out of any text Email ValidatorCheck email format, role-based and disposable hints Email Header AnalyzerParse raw email headers for path, SPF, DKIM, DMARC Word Frequency CounterCount how often every word appears in your text Alphabetical Order SorterSort lines A-Z, Z-A, remove duplicates and trim Find and ReplaceFind and replace text anywhere in your document Shuffle LinesRandomly shuffle the order of lines in your text Add Prefix & SuffixAdd a prefix or suffix to every line of text at once Text Case ConverterConvert text to UPPER, lower, Title, camelCase, snake_case and more Text SummarizerCondense long text into its most important sentences
Category

Converters

Length ConverterConvert between mm, cm, m, km, inches, feet and more Weight ConverterConvert between mg, g, kg, ounces, pounds and more Temperature ConverterConvert between Celsius, Fahrenheit and Kelvin Speed ConverterConvert between m/s, km/h, mph, knot and ft/s Data Storage ConverterConvert between bit, byte, KB, MB, GB and more Number Base ConverterConvert between decimal, binary, octal and hexadecimal Roman Numeral ConverterConvert numbers to Roman numerals and back Volume ConverterConvert volume between litres, gallons, cups and more Area ConverterConvert area between square metres, acres, feet and more Energy ConverterConvert energy between joules, calories, watt-hours, BTU and more Fuel Economy ConverterConvert MPG to litres per 100 km and other fuel efficiency units Pressure ConverterConvert pressure between bar, PSI, atmospheres, kPa and more Frequency ConverterConvert between hertz, kilohertz, megahertz and gigahertz
Category

Developer Tools

JSON FormatterFormat, minify and validate JSON JSON ValidatorValidate JSON and get helpful error messages Base64 Encode/DecodeEncode or decode Base64 text with Unicode support URL Encoder/DecoderEncode or decode URL components Color ConverterConvert between HEX, RGB and HSL with live preview HTML Entity ConverterEncode and decode HTML special characters CSV to JSONConvert CSV data into JSON Markdown to HTMLConvert Markdown into clean HTML code Regex TesterTest regular expressions with match highlighting Hashing ToolGenerate MD5, SHA-1, SHA-256 and SHA-512 hashes JSON to CSV ConverterTurn a JSON array into CSV table output HTML to Markdown ConverterConvert HTML markup into clean Markdown text JWT DecoderDecode the header and payload of any JWT token Hex Encoder / DecoderConvert text to hexadecimal and hex back to readable text HTML PreviewWrite HTML and see it rendered instantly in a sandboxed preview Gitignore GeneratorBuild a .gitignore file from templates for your stack Base64 Encoder / DecoderEncode text to Base64 or decode Base64 back to text CSS Minifier & FormatterMinify or pretty-print CSS rules quickly JSON to YAML ConverterTurn JSON objects into readable YAML markup
Category

Generators

Password GeneratorGenerate secure, random passwords with strength meter Random Number GeneratorGenerate random numbers within a range QR Code GeneratorGenerate QR codes from text or URLs Lorem Ipsum GeneratorGenerate placeholder text for design work Password Strength CheckerAnalyse password strength and get suggestions Dice RollerRoll one or more virtual dice UUID GeneratorGenerate random UUID v4 identifiers Random PickerPick random names or items from a list Email Signature GeneratorCraft a clean HTML email signature with socials Hashtag GeneratorGenerate relevant hashtags from your keywords Social Media Bio GeneratorCreate bio variants for your favourite profiles Business Name GeneratorInvent memorable company names from word parts Coupon Code GeneratorGenerate bulk coupon and promo codes for stores Username GeneratorCreate unique usernames for social media, games and apps CSV Data GeneratorGenerate realistic fake CSV data for testing and demos Pet Name GeneratorInvent cute names for dogs, cats, birds and fish Acrostic Poem GeneratorTurn a name or word into a poem line by line
Category

Date & Time

Unix Timestamp ConverterConvert between Unix timestamps and readable dates Number to WordsConvert numbers into English words Countdown TimerCount down from a set time with start and pause Timezone ConverterConvert a time from one timezone to another Business Days CalculatorCount exact business days between two dates Day of Year CalculatorFind the day number, week and days left in the year Add Days CalculatorAdd or subtract days, weeks or months to any date Week Number CalculatorFind the ISO week number and day of a given date Age in WeeksSee how old someone is in weeks, days and total days Hours Worked CalculatorTotal up work time from clock-in, clock-out and break amounts Date Format ConverterSee any date in ISO, US, EU, RFC and time-ago formats
Category

SEO Tools

Keyword Density AnalyzerMeasure keyword density and top terms in your text Meta Tag GeneratorCreate title, description and keyword meta tags SERP PreviewPreview how your listing looks in Google search Robots.txt GeneratorBuild a robots.txt file for your website Sitemap GeneratorGenerate an XML sitemap for your URLs Heading Structure CheckerCheck H1-H6 hierarchy and heading balance Readability ScoreEstimate reading level and reading time Schema (JSON-LD) GeneratorCreate structured data markup for rich results Title & Meta Length CheckerCheck title and description lengths for search URL Structure CheckerAnalyze and clean up URL slugs for SEO SEO Slug GeneratorTurn any title into a clean, search-friendly URL slug Meta Description GeneratorAuto-write a search-friendly description of any text
Category

Media Tools

Image CompressorCompress images lossless or lossy with quality slider Image ResizerResize images with aspect ratio lock and multiple outputs Image Format ConverterConvert between WebP, AVIF, JPEG, PNG, GIF, BMP, TIFF EXIF StripperRemove GPS, camera, and metadata from images Placeholder Image GeneratorGenerate SVG placeholders with custom text and colors Favicon GeneratorCreate multi-size ICO, PNG, Apple touch icons, manifest.json OG Image GeneratorCreate social preview cards (1200x630) with templates Color Palette GeneratorExtract palette from image, export CSS/JSON/Tailwind Color Contrast CheckerWCAG AA/AAA contrast ratios for text and UI elements CSS Gradient GeneratorLinear, radial, conic gradients with CSS code export Aspect Ratio CalculatorSimplify a width and height into a clean pixel ratio Pixels to Inches ConverterConvert pixels to inches or centimetres at any DPI or PPI Image Color ExtractorPull the dominant hex colors straight from an image
Category

Security & Privacy

CSP GeneratorContent Security Policy builder with nonce/hash helpers Security Headers ScannerScan CSP, HSTS, X-Frame-Options, Referrer-Policy, Permissions-Policy HSTS Preload CheckerValidate HSTS headers and preload list eligibility SSL Certificate CheckerCheck expiry, chain, SAN, OCSP, CAA records SRI Hash GeneratorSubresource Integrity hashes for CDN scripts and styles API Key GeneratorGenerate strong random API keys with prefixes Passphrase GeneratorCreate memorable diceware-style passphrases Password Entropy CalculatorMeasure password strength in bits of entropy and crack time Common Ports ReferenceSearch and browse a reference table of common TCP/UDP ports File Permissions CalculatorTurn owner, group and other checkboxes into chmod numbers and symbols Phishing URL CheckerScan any link for common phishing red flags