All Free Online Tools
Every calculator and utility tool in one place, free, instant, no signup required.
401(k) Calculator
Project your 401(k) balance at retirement with employer match and contribution scenarios.
Absolute Value Calculator
Calculate the absolute value of any number or expression instantly.
Acres to Hectares
Convert between acres and hectares instantly.
Age & Milestone Tracker
Track exact age, days lived, next birthday, birthday countdown, and upcoming life milestones from any birth date.
Age Calculator
Find your exact age in years, months, and days from any date of birth.
Age Difference Calculator
Calculate the age difference between two people or any two dates.
AI Text Summarizer
Paste any long text and get a concise extractive summary.
AI Token Calculator
Estimate AI tokens, words, characters, context usage, and per-request cost for popular AI models.
Alcohol by Volume Calculator
Calculate the ABV percentage of any homebrew or mixed drink.
Algebra Calculator
Solve common algebra problems including equations, expressions, factoring, expansion, quadratics, and simple systems with step-by-step explanations.
Anagram Solver
Find all valid words that can be made from any set of letters.
Annuity Calculator
Calculate the present and future value of any annuity payment stream.
API Cost Calculator
Estimate AI API costs based on model pricing, token usage, requests, and monthly volume.
APR Calculator
Calculate the Annual Percentage Rate on any loan, including fees and costs.
Area Converter
Convert between square meters, kilometers, inches, feet, acres, and hectares.
Aspect Ratio Calculator
Calculate and lock aspect ratios for images, videos, and screens.
Auto Loan Calculator
Calculate monthly car payments, total interest, and true cost of any auto loan.
Average Calculator
Paste a list of numbers to instantly get the mean, sum, count, min, and max.
BAC Calculator
Estimate your blood alcohol content based on drinks, weight, and time.
Background Remover
Remove solid-color backgrounds from any image.
Bandwidth Calculator
Calculate download/upload times and data transfer rates.
Base32 Encoder and Decoder
Encode text to Base32 or decode Base32 strings instantly in your browser.
Base64 Encoder and Decoder
Encode text to Base64 or decode Base64 strings instantly in your browser.
Base64 to Image
Paste a Base64 string and convert it back to a viewable image.
Basic Calculator
A clean, keyboard-friendly calculator for everyday arithmetic: add, subtract, multiply, divide.
Bench Press Calculator
Estimate your bench press one-rep max from any weight and rep count.
Binary Calculator
Add, subtract, multiply, and divide binary numbers.
Binary to Text Converter
Convert binary code to readable text or text to binary, both directions.
Bio Generator
Create the perfect Instagram or Twitter bio in seconds. Choose your vibe and platform.
Birthday Calculator
Find your exact age, day you were born, days until next birthday, and zodiac sign.
Blog Title Generator
Generate SEO-friendly blog title ideas from any topic.
Blood Pressure Calculator
See your blood pressure category from systolic and diastolic readings.
Blur Image Tool
Upload an image, choose a blur radius, and download the blurred result.
BMI Calculator
Calculate your body mass index and understand the result category.
BMI Prime Calculator
Calculate your BMI Prime ratio and understand your weight status.
BMR Calculator
Find your Basal Metabolic Rate and Total Daily Energy Expenditure.
Body Fat Calculator
Estimate your body fat percentage using the US Navy method.
Box Shadow Generator
Create and preview CSS box-shadow values visually.
Break-Even Calculator
Calculate how many units you need to sell to cover your costs.
Caffeine Calculator
Find out how much caffeine is safe per day and how long it stays in your system.
CAGR Calculator
Find the Compound Annual Growth Rate of any investment over any period.
Calorie Burn Calculator
Estimate calories burned during exercise using MET values.
Calorie Calculator
Calculate your daily calorie needs (TDEE) and personalised macro split.
Canada Income Tax Calculator
Estimate Canadian federal and provincial income tax, taxable income, marginal rate, effective rate, and take-home income.
Caption Generator
Generate engaging Instagram and Twitter captions by tone and topic. Includes optional hashtags.
Carbon Footprint Calculator
Estimate your annual carbon footprint from travel, home energy, and diet.
CD Calculator
Calculate the maturity value and interest earned on a certificate of deposit.
Celsius to Fahrenheit
Convert any temperature between Celsius and Fahrenheit instantly.
Character Counter
Count characters, words, and sentences in real time with platform limits.
Chmod Calculator
Calculate Unix file permission chmod values visually.
Circle Calculator
Calculate area, circumference, diameter, and radius of any circle.
Coin Flip
Flip a virtual coin online. Get heads or tails instantly.
Color Code Converter
Convert colors between HEX, RGB, HSL, and HSV formats instantly.
Color Contrast Checker
Check WCAG color contrast ratios for accessible web design.
Color Extractor
Upload any image and extract its 8 dominant colors.
Color Palette Generator
Generate random color palettes of 3–10 colors.
Color Picker
Pick any colour and convert it between HEX, RGB, and HSL formats.
Column Splitter
Split spreadsheet or CSV columns by delimiter, width, or pattern.
Combinations Calculator
Calculate combinations (nCr) and permutations (nPr) instantly.
Compound Interest Calculator
See how your savings grow over time with compound interest.
Compress PDF
Reduce PDF file size while keeping documents readable.
Concrete Calculator
Calculate how much concrete you need for slabs, columns, and footings.
Cooking Converter
Convert between cups, tablespoons, teaspoons, fl oz, ml, and litres.
Countdown Timer & Stopwatch
Set any countdown with an audio alert. Includes a stopwatch with lap support.
Credit Card Payoff Calculator
See exactly how long to pay off your credit card and total interest paid.
Cron Expression Generator
Build and explain cron schedule expressions visually.
Crypto Profit Calculator
Calculate crypto profit, loss, ROI, break-even price, trading fees, and estimated after-tax return.
CSS Border Radius Generator
Visually build CSS border-radius values and copy the CSS code.
CSS Formatter
Beautify or minify any CSS.
CSS Gradient Generator
Build beautiful linear and radial CSS gradients visually.
CSS Minifier
Minify any CSS code to reduce file size for production.
CSV ↔ JSON Converter
Convert between CSV and JSON in either direction.
CSV Cleaner
Clean CSV data by trimming spaces, fixing rows, and removing duplicates.
CSV to Excel
Convert CSV data into an Excel-compatible spreadsheet.
CSV to JSON Converter Advanced
Convert CSV to JSON with delimiter, nesting, and download options.
CSV to XML Converter
Convert CSV data into structured XML.
CSV/TSV Spreadsheet Converter
Clean CSV and TSV spreadsheet exports with local preview, copy, and download.
Currency Converter
Convert between 20 major currencies using live mid-market rates.
Data Sorter
Sort lines, rows, or tabular data with useful ordering options.
Data Storage Converter
Convert between bits, bytes, KB, MB, GB, TB, and PB.
Date Difference Calculator
Find the exact days, weeks, months, and years between any two dates.
Days to Weeks
Convert any number of days to weeks and days instantly.
Debt-to-Income Calculator
Calculate your DTI ratio to understand your borrowing capacity.
Density Calculator
Calculate density, mass, or volume from any two known values.
Dew Point Calculator
Calculate the dew point temperature from air temperature and humidity.
Dice Roller
Roll D4, D6, D8, D10, D12, D20, and D100 dice with modifiers.
Discount Calculator
Calculate the final price, discount amount, and savings from any percentage off.
Dividend Yield Calculator
Calculate the dividend yield percentage and annual dividend income from any stock.
Dog Years Calculator
Convert your dog's age to human years using size-adjusted research.
Dress Size Converter
Convert women's dress sizes between US, UK, EU, French, Italian, and Australian.
Due Date Calculator
Estimate your baby's due date and pregnancy milestones.
Due Date Countdown
Count down the days, hours, and minutes to any upcoming due date or event.
Electricity Cost Calculator
Calculate how much any appliance costs to run per hour, day, or month.
Emergency Fund Calculator
Find out how much you need in your emergency fund based on monthly expenses.
EMI Calculator
Calculate monthly EMI, total interest, total repayment, and amortization summary for loans.
Energy Converter
Convert between joules, calories, kilowatt-hours, BTUs, and more.
EPF Calculator
Estimate your EPF retirement balance with employee + employer contributions, EPS allocation, VPF, salary growth, and EPFO interest.
Excel Formula Generator
Generate spreadsheet formulas from plain-language instructions.
Excel to CSV
Convert Excel spreadsheets to CSV files in your browser.
Excel to PDF
Convert spreadsheet data into a PDF document.
Exponent Calculator
Calculate any base raised to any power, including fractional exponents.
Factorial Calculator
Calculate the factorial of any non-negative integer with step-by-step working.
Fancy Text Generator
Generate stylish Unicode text in dozens of fonts for social media.
FAQ Generator
Generate useful FAQ questions and answers from any topic.
Fibonacci Calculator
Generate the Fibonacci sequence up to any number of terms instantly.
File Name Cleaner
Clean, sanitize, and normalize messy file names.
File Size Calculator
Convert file sizes between Bytes, KB, MB, GB, and TB using the binary 1024-byte system.
Final Grade Calculator
Find out exactly what score you need on your final exam.
Flooring Calculator
Calculate how many square feet of flooring you need for any room.
Fraction Calculator
Add, subtract, multiply, or divide fractions with step-by-step working.
Freelance Rate Calculator
Calculate the hourly rate you need to charge to hit your income goal as a freelancer.
Fuel Cost Calculator
Estimate the fuel cost of any trip based on distance and fuel price.
Future Value Calculator
Calculate the future value of any investment with regular contributions.
GATE Virtual Calculator
Practice GATE-style scientific calculations with an unofficial online virtual calculator for Indian engineering exam preparation.
GPA Calculator
Add courses, select grades, and enter credit hours to calculate your GPA.
Grade Calculator
Calculate your weighted course grade from multiple assignments and tests.
Grammar Checker
Detect repeated words, missing capitalisation, and common misspellings.
Gratuity Calculator
Estimate your gratuity in India using the Payment of Gratuity Act formula, with service rounding, eligibility check, the ₹20 lakh statutory cap, and Section 10(10) tax exemption.
Gravel Calculator
Calculate how much gravel, sand, or topsoil you need for any area.
GST Calculator
Add GST to a price or remove it from a total.
Half-Life Calculator
Calculate remaining quantity after radioactive decay using half-life formulas.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text.
Hashtag Generator
Generate relevant hashtags for Instagram and Twitter by niche. Pick a category and copy.
Heart Rate Zone Calculator
Calculate your five training heart rate zones based on your max heart rate.
Heat Index Calculator
Calculate the feels-like temperature from heat and humidity.
Hex to Decimal Converter
Convert between hexadecimal, decimal, binary, and octal instantly.
Horsepower to Watts
Convert between horsepower and watts or kilowatts instantly.
Hourly to Salary Calculator
Convert between hourly rate and annual salary.
HTML Encoder / Decoder
Encode special characters to HTML entities or decode them back.
HTML Formatter
Instantly format and indent any HTML.
HTML to JSX Converter
Convert any HTML snippet to valid React JSX syntax instantly.
HTML to Markdown Converter
Convert HTML into clean, readable Markdown instantly.
HTML/CSS/JS Minifier
Minify complete HTML pages with inline CSS and JavaScript in one browser-based tool.
HTTP Headers Viewer
Inspect HTTP response headers for any public URL.
Ideal Weight Calculator
Find your ideal body weight range using multiple established formulas.
Image Compressor
Reduce image file sizes without visible quality loss.
Image Converter
Convert images between PNG, JPEG, and WebP.
Image to Base64
Convert any image to a Base64 data URL.
Image to PDF
Convert PNG, JPG, and WebP images into a PDF.
Impromptu Speaking Topic Generator
Generate random topics to practice impromptu speaking with a built-in countdown timer.
Inches to CM
Convert between inches and centimeters with a conversion table.
India Income Tax Calculator
Estimate India income tax under the old or new tax regime, including rebate, cess, taxable income, and take-home income.
Inflation Calculator
See how inflation erodes purchasing power over time.
Internet Speed Checker
Test your download speed, upload speed, and ping in your browser.
Investment Return Calculator
Project investment growth with a year-by-year breakdown.
IP Address Finder
Instantly see your public IP address and visible country.
JavaScript Formatter
Format or minify any JavaScript.
JPG to PDF Converter
Combine JPG images into a clean PDF file.
JS Minifier
Minify any JavaScript code to reduce file size for production.
JSON Diff Checker
Compare two JSON objects and highlight added, removed, and changed keys.
JSON Formatter
Paste raw or minified JSON and instantly format it.
JSON to CSV Converter
Convert JSON arrays to CSV spreadsheet format instantly.
JSON to CSV Converter Advanced
Convert JSON to CSV with nested object flattening and custom delimiters.
JSON to XML Converter
Convert any JSON object or array into readable, well-structured XML.
JSON to YAML Converter
Convert JSON objects and arrays into clean, human-readable YAML.
JSON Validator
Validate and format any JSON string and see detailed error messages.
JWT Decoder
Decode any JSON Web Token and inspect the header and payload claims.
Keto Calculator
Calculate your personalised keto macros for fat loss or maintenance.
Keyword Density Checker
Measure keyword usage and density in any text.
Keyword Extractor
Paste any text and instantly extract the top keywords by frequency. Great for SEO and content analysis.
KG to LBS
Convert between kilograms and pounds with a quick reference table.
LCM & GCF Calculator
Find the Least Common Multiple and Greatest Common Factor of any numbers.
Lean Body Mass Calculator
Calculate your lean body mass using the Boer, James, and Hume formulas.
Lease Calculator
Calculate monthly lease payments for a car or equipment lease.
Length Converter
Convert length units such as meters, feet, inches, kilometers, and miles instantly.
Life Annuity Calculator
Estimate monthly retirement income from a lump sum using life annuity assumptions.
Liters to Gallons
Convert between liters and US or imperial gallons instantly.
Living Annuity Calculator
Estimate how long retirement capital may last with drawdowns, investment returns, inflation, and fees.
Loan Calculator
Estimate monthly payments, total interest, and repayment totals for a loan.
Loan Payoff Calculator
Estimate your loan payoff date, total interest, and how extra payments can help you pay off debt faster.
Logarithm Calculator
Calculate log base 10, natural log, and any custom base logarithm.
Lorem Ipsum Generator
Generate realistic placeholder text by paragraphs, sentences, or word count.
Love Calculator
Check your compatibility with anyone. Enter two names and get an instant love percentage.
Macro Calculator
Calculate your daily protein, carbs, and fat targets for your goal.
Margin Calculator
Calculate gross profit, margin percentage, and markup.
Markdown Preview
Write Markdown and see a live rendered preview.
Markdown to HTML
Convert Markdown to clean HTML instantly.
Mean Median Mode Calculator
Calculate mean, median, mode, and range from any list of numbers.
Meeting Cost Tracker
Estimate meeting cost from duration, attendees, hourly rates, salaries, loaded cost multiplier, and recurring meeting frequency.
Meme Generator
Upload any image, add top & bottom Impact text, and download your meme.
Merge Columns
Merge spreadsheet or CSV columns with a custom separator.
Merge PDF
Combine multiple PDF files into one document.
Meta Tag Analyzer
Check SEO titles, descriptions, Open Graph, and Twitter card tags.
Meta Tag Generator
Generate all HTML meta tags for SEO, Open Graph, and Twitter Cards.
Miles to KM
Convert between miles and kilometers with a handy reference table.
Military Time Converter
Convert between 24-hour military time and standard 12-hour AM/PM time.
Minutes to Hours
Convert any number of minutes to hours and minutes instantly.
MM to Inches
Convert between millimeters and inches instantly.
Modulo Calculator
Calculate the remainder of any division operation instantly.
Morse Code Converter
Translate text to Morse code or decode Morse code back to text.
Mortgage Calculator
Estimate monthly mortgage payments, total interest, and repayment totals.
MP4 ↔ MP3 Converter
Extract MP3 audio from MP4 video, or wrap an MP3 into an MP4 container.
MPH to KPH
Convert between miles per hour and kilometers per hour instantly.
Net Carb Calculator
Calculate the net carbs in any food by subtracting fiber and sugar alcohols.
Net Worth Calculator
Add up your assets and liabilities to calculate your total net worth.
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal.
Number Rounding Calculator
Round any number to decimal places, significant figures, or the nearest integer.
Number to Words Converter
Convert any number into its written English word form.
Ohm's Law Calculator
Solve voltage, current, resistance, and power using Ohm's Law.
One Rep Max Calculator
Estimate your one-rep max for any lift using proven formulas.
Outline Generator
Generate structured outlines for articles, essays, and plans.
Overtime Calculator
Calculate regular and overtime pay for any hourly rate and hours worked.
Ovulation Calculator
Estimate your ovulation date and fertile window.
Paint Calculator
Calculate how many gallons of paint you need to cover any room.
Palindrome Checker
Check if any word, phrase, or sentence is a palindrome instantly.
Paraphrasing Tool
Rewrite text in Simple or Formal tone.
Password Generator
Generate strong, random passwords with custom length and character settings.
Password Strength Checker
Analyze any password: strength score, crack time estimate, and improvement tips.
Paycheck Calculator
Estimate your take-home pay after federal and state taxes, Social Security, and Medicare.
PDF Metadata Viewer
Inspect PDF title, author, page count, and document metadata.
PDF Page Number Adder
Add page numbers to a PDF with custom placement and formatting.
PDF Password Protect
Add password protection to a PDF file.
PDF Splitter
Split a PDF into separate files, extract selected pages, save page ranges, or create smaller PDF documents.
PDF to Excel
Extract PDF table data into an Excel-friendly format.
PDF to JPG Converter
Convert PDF pages into JPG images in your browser.
PDF to Text Extractor
Extract readable text from any PDF. Choose pages, copy, or download.
PDF to Word
Convert PDF content into an editable Word-style document.
Peptide Calculator
Calculate peptide concentration, dose volume after reconstitution.
Percentage Calculator
Calculate percentages, increases, decreases, and percentage differences instantly.
Percentage Decrease Calculator
Find the percentage drop between two values.
Percentage Increase Calculator
Calculate the percentage increase or decrease between two values.
Percentage of Total Calculator
Find what percentage one number is of another instantly.
Period Calculator
Estimate your next period, fertile window, and ovulation date.
Pig Latin Translator
Translate any English text into Pig Latin instantly.
Pixel Converter
Convert between px, rem, em, pt, and vw/vh CSS units.
Pregnancy Calculator
Find out how many weeks pregnant you are and your trimester.
Present Value Calculator
Calculate the present value of a future sum discounted at a given interest rate.
Prime Number Checker
Check if any number is prime and find prime factors instantly.
Probability Calculator
Calculate single and multiple event probabilities with step-by-step solutions.
Protein Intake Calculator
Calculate your optimal daily protein intake based on your weight and activity level.
PSI to Bar
Convert between PSI and bar pressure units instantly.
Pushup Calculator
Estimate your fitness level based on how many pushups you can do.
Pythagorean Theorem Calculator
Find any side of a right triangle with step-by-step solution.
QR Code Maker
Generate a QR code from any URL, text, or contact details.
QR Code Scanner
Decode any QR code by uploading an image or scanning live with your camera.
Quadratic Equation Solver
Solve ax² + bx + c = 0 instantly with full step-by-step solution.
Random Color Generator
Generate random HEX, RGB, and HSL color values.
Random Compliment Generator
Get an instant, genuine compliment to share with a friend or keep for yourself.
Random Letter Generator
Generate random letters in uppercase, lowercase, or both.
Random Name Picker
Paste a list of names and instantly pick one or more at random. Great for giveaways and classroom draws.
Random Number Generator
Generate random numbers within any given range.
Random String Generator
Generate cryptographically random strings with custom character sets.
Ratio Calculator
Simplify any ratio A:B and get the decimal and percentage form.
Reading Time Calculator
Paste any text to instantly see how long it takes to read.
Recipe Scaler
Scale any recipe up or down by entering the number of servings.
Regex Tester
Test regular expressions against sample text with live match highlighting.
Remove Duplicate Lines
Paste any text and instantly remove all duplicate lines.
Remove Duplicate Rows
Remove duplicate rows from CSV, TSV, or pasted table data.
Remove Extra Spaces
Strip leading, trailing, and extra spaces from any text instantly.
Rent vs Buy Calculator
Compare the true cost of renting vs buying a home over time.
Retirement Calculator
Project your retirement savings and see if you're on track to retire.
Reverse Text Generator
Instantly reverse any text, sentence, or string character by character.
Ring Size Converter
Convert ring sizes between US, UK, EU, mm diameter and circumference.
Robots.txt Generator
Generate a valid robots.txt file for your website with common presets.
ROI Calculator
Calculate return on investment. Enter initial investment and final value.
Roman Numeral Converter
Convert numbers to Roman numerals or decode Roman numerals back.
ROT13 Encoder
Apply ROT13 to any text. Applying ROT13 twice restores the original.
Rotate PDF
Rotate PDF pages and export a corrected document.
Running Pace Calculator
Calculate your running pace, time, or distance for any race distance.
Salary Calculator
Calculate take-home pay after tax for 12 countries.
Sample Size Calculator
Find the right survey sample size for any confidence level and margin of error.
Savings Calculator
Calculate how your savings grow over time with starting balance, regular contributions, compound interest, inflation, and tax estimates.
Savings Goal Calculator
Find out how much to save per month to reach any financial goal.
Scientific Calculator
Full-featured scientific calculator with trig, logarithms, and powers.
Scientific Notation Calculator
Convert numbers to and from scientific notation and perform arithmetic.
Screen Resolution Checker
Instantly see your screen resolution, viewport size, device pixel ratio, and orientation.
Screen Size Calculator
Calculate diagonal screen size and PPI from width and height in pixels.
Screenshot to PDF
Upload multiple images and combine them into a multi-page PDF.
Sentence Counter
Count the number of sentences in any text instantly.
Shoe Size Converter
Convert shoe sizes between US, UK, EU, Japanese, and centimetre systems.
Significant Figures Calculator
Round any number to a specified number of significant figures.
Simple Interest Calculator
Calculate interest earned on a principal at a fixed annual rate.
SIP Calculator
Calculate SIP maturity value, returns, benchmark comparison, step-up growth, and inflation-adjusted value.
Sleep Calculator
Find the perfect bedtime or wake-up time based on 90-minute sleep cycles.
Social Media Caption Generator
Create captions for Instagram, TikTok, LinkedIn, and more.
Sort Text Lines
Sort any list of lines alphabetically, reverse, or randomly.
Speed Converter
Convert between m/s, km/h, mph, ft/s, and knots.
Speed Distance Time Calculator
Solve for speed, distance, or time given the other two values.
Spin the Wheel
Add custom options and spin an animated wheel to pick a random winner.
SQL Formatter
Format and beautify any SQL query.
Square Feet to Square Meters
Convert between square feet and square meters instantly.
Stamp Duty & Registration Calculator India
Estimate stamp duty, registration fees, surcharge, cess, and total property registration cost in India.
Standard Deviation Calculator
Calculate population and sample standard deviation, variance, and mean.
Steps to Miles Calculator
Convert your daily step count to miles or kilometers walked.
Stock Profit Calculator
Calculate profit, loss, and return on investment for any stock trade.
Stone to KG
Convert between stone and kilograms with a reference table.
Subnet Calculator
Calculate IPv4 subnet details including CIDR, subnet mask, network address, broadcast address, wildcard mask, host range, and usable hosts.
Swimming Pace Calculator
Calculate your swimming pace per 100m or 100 yards for any distance and time.
Tax Bracket Calculator
See exactly which US federal tax brackets your income falls into and your effective rate.
TDEE Calculator
Calculate maintenance calories, BMR, activity-adjusted TDEE, goal calories, and macro estimates.
Temperature Converter
Convert temperatures between Celsius, Fahrenheit, and Kelvin instantly.
Text Case Converter
Convert text between uppercase, lowercase, title case, sentence case, and more.
Text Compare
Compare two text blocks and spot differences quickly.
Text Diff Checker
Compare two texts side by side. Additions in green, deletions in red.
Text Repeater
Repeat any text a specified number of times with a custom separator.
Text to Hashtags
Convert any text or title into a list of relevant hashtags for social media.
Text to PDF
Turn plain text into a downloadable PDF document.
Tile Calculator
Calculate how many tiles you need for any floor or wall area.
Time Calculator
Add, subtract, and compare time durations in hours, minutes, seconds, days, and weeks.
Time Converter
Convert between milliseconds, seconds, minutes, hours, days, weeks, and years.
Time to Decimal
Convert hours and minutes to a decimal number for payroll and billing.
Time Zone Converter
Convert times across different global time zones.
Timestamp Converter
Convert Unix timestamps to readable dates and back.
Tip Calculator
Calculate tip amounts and split bills fairly.
Triangle Area Calculator
Calculate triangle area using base & height or Heron's formula.
Trigonometry Calculator
Compute all six trig functions for any angle in degrees or radians.
Truth or Dare Generator
Generate random Truth or Dare prompts with difficulty levels for any group or party.
Typing Speed Test
Test your typing speed in WPM and accuracy with real text passages.
UK Income Tax Calculator
Estimate UK income tax, personal allowance, taxable income, marginal rate, effective rate, and take-home income.
Unit Converter
Convert between various measurement units.
Unlock PDF
Remove restrictions from PDFs you own and are allowed to edit.
URL Cleaner
Remove tracking parameters and tidy messy URLs.
URL Encoder / Decoder
Encode any text with encodeURIComponent or decode a percent-encoded string.
URL Slug Generator
Convert any title or phrase into a clean SEO-friendly URL slug.
US Income Tax Calculator
Estimate US federal income tax, taxable income, marginal rate, effective rate, and take-home income.
User Agent Detector
Detect your browser, operating system, device, and user agent string.
Username Generator
Generate creative username ideas for profiles, games, and social accounts.
UUID Generator
Generate 1–100 cryptographically random UUID v4 identifiers.
VAT Calculator
Add or remove VAT for 20+ countries. Choose a country preset or custom rate.
VO2 Max Calculator
Estimate your VO2 max fitness level from a simple step test or running time.
Volume Converter
Convert between milliliters, liters, cubic meters, cups, pints, quarts, and gallons.
Waist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio and understand your cardiovascular risk.
Water Intake Calculator
Calculate how much water you should drink per day.
Watts to Kilowatts
Convert between watts, kilowatts, and megawatts instantly.
Website Status Checker
Check whether a website is reachable and view response details.
Weight Converter
Convert between milligrams, grams, kilograms, ounces, pounds, and stone.
Wind Chill Calculator
Calculate the wind chill feels-like temperature from air temperature and wind speed.
Word Counter
Count words, characters, sentences, paragraphs, and reading time instantly.
Word Frequency Counter
Count how many times each word appears in any text.
Word to PDF
Convert Word-style documents into PDF files.
Would You Rather Generator
Generate random Would You Rather questions for parties, icebreakers, and group games.
XML to JSON Converter
Convert XML into clean, formatted JSON.
YAML Formatter
Format and validate YAML data instantly in your browser.
Yards to Meters
Convert between yards and meters with a handy reference table.
YouTube Title Generator
Create clickable YouTube title ideas by topic and tone.
Z-Score Calculator
Calculate the z-score for any value in a data set and find the percentile.