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Loan EMI Calculator Work out the fixed monthly payment (EMI) for any loan amount, interest rate and term. Finance and Loans
Mortgage Calculator Estimate your monthly mortgage payment including principal, interest, tax and insurance. Real Estate
Percentage Calculator Solve everyday percentage problems — find a percent, a share or a change. Mathematics
Age Calculator Find an exact age in years, months and days from a date of birth. Date and Time
BMI Calculator Check your Body Mass Index and weight category in metric or imperial units. Health and Nutrition
Unit Converter Convert length, weight, temperature, volume, area, speed and data units instantly. Unit Converters
Word Counter Count words, characters, sentences and paragraphs with live reading time. Text and Writing
JSON Formatter Format, validate and minify JSON with clear error reporting. Developer Tools
Image Compressor Reduce JPG, PNG and WebP file sizes privately in your browser. Image Tools
QR Code Generator Create a crisp, downloadable QR code from any link or text. Productivity
Simple Interest Calculator Calculate simple interest and the total amount due on a principal. Finance and Loans
Compound Interest Calculator See how savings grow with compound interest and regular deposits. Investment
Discount Calculator Find the sale price and how much you save after a discount. Finance and Loans
Tip Calculator Work out the tip and total, and split it between people. Finance and Loans
Split Bill Calculator Divide a bill (with optional tip) evenly between people. Finance and Loans
GST Calculator Add or remove GST and see the net, tax and gross amounts. Finance and Loans
VAT Calculator Add or remove VAT and see the net, tax and gross amounts. Finance and Loans
Profit Margin Calculator Calculate profit, profit margin and markup from cost and price. Business and Ecommerce
Markup Calculator Set a selling price by applying a markup to your cost. Business and Ecommerce
Date Difference Calculator Count the days, weeks, months and years between two dates. Date and Time
Average Calculator Find the mean, median, mode, sum and range of a list of numbers. Mathematics
BMR Calculator Estimate your Basal Metabolic Rate — calories burned at rest. Health and Nutrition
TDEE Calculator Estimate your daily calorie needs from BMR and activity level. Fitness
Fuel Cost Calculator Estimate the fuel needed and cost for any trip. Travel and Vehicle
Strong Password Generator Generate strong, random passwords with full control over length and characters. Security and Privacy
Passphrase Generator Build memorable yet strong passphrases from random words. Security and Privacy
Password Strength Checker Estimate how strong a password is and how long it might take to crack. Security and Privacy
Random Number Generator Generate random numbers in any range, with or without duplicates. Random Generators
Coin Flip Flip a fair virtual coin — once or many times. Random Generators
Dice Roller Roll any number of dice with 4 to 100 sides. Random Generators
Random Name Picker Pick one or more random winners from a list of names. Random Generators
Text Case Converter Convert text to UPPER, lower, Title, Sentence, camelCase and more. Text and Writing
Remove Duplicate Lines Delete repeated lines from a list and keep only unique entries. Text and Writing
Remove Extra Spaces Collapse double spaces, trim lines and tidy messy whitespace. Text and Writing
Sort Lines Sort lines alphabetically, numerically, by length or randomly. Text and Writing
Reverse Text Reverse text by characters, words or lines. Text and Writing
Slug Generator Turn a title into a clean, SEO-friendly URL slug. Text and Writing
Base64 Encoder / Decoder Encode text to Base64 or decode Base64 back to text. Developer Tools
URL Encoder / Decoder Percent-encode text for URLs or decode an encoded URL. Developer Tools
Wi-Fi QR Code Generator Create a QR code that lets guests join your Wi-Fi by scanning. Productivity
Meta Tag Generator Generate clean SEO meta tags for your page in seconds. SEO and Website Tools
Open Graph Generator Create Open Graph tags for rich social media previews. SEO and Website Tools
Twitter Card Generator Generate Twitter/X Card meta tags for rich tweet previews. SEO and Website Tools
SERP Preview Tool Preview your Google snippet and check title and description length. SEO and Website Tools
Robots.txt Generator Create a valid robots.txt to guide search engine crawlers. SEO and Website Tools
UTM Builder Build trackable campaign URLs with UTM parameters. SEO and Website Tools
FAQ Schema Generator Generate FAQ Page JSON-LD structured data for rich results. SEO and Website Tools
UUID Generator Generate random version-4 UUIDs (GUIDs). Developer Tools
Unix Timestamp Converter Convert between Unix timestamps and human-readable dates. Developer Tools
Number Base Converter Convert numbers between binary, octal, decimal and hexadecimal. Developer Tools
Color Converter Convert colours between HEX, RGB and HSL with a live swatch. Developer Tools
CSS Gradient Generator Create CSS linear or radial gradients with a live preview. Developer Tools
CSS Minifier Minify CSS by removing comments and unnecessary whitespace. Developer Tools
GPA Calculator Calculate your grade point average from courses and credits. Education
Grade Calculator Work out the score you need on a final exam to hit your target. Education
Contact QR Code Generator Create a QR code that saves your contact details when scanned. Productivity
Ohm's Law Calculator Solve voltage, current, resistance and power — enter any two. Science and Engineering
Scientific Notation Converter Convert numbers to and from scientific notation. Science and Engineering
Speed Distance Time Calculator Solve speed, distance or time — enter the two you know. Science and Engineering
Force Calculator (F = ma) Calculate force, mass or acceleration with Newton’s second law. Science and Engineering
Density Calculator Calculate density, mass or volume from the other two. Science and Engineering
Energy Converter Convert energy between joules, calories, kWh, BTU and more. Science and Engineering
Pressure Converter Convert pressure between Pa, bar, atm, psi, mmHg and more. Science and Engineering
Fraction Simplifier Reduce a fraction to its lowest terms and as a decimal. Mathematics
Ratio Calculator Solve a proportion A:B = C:D for the missing value. Mathematics
LCM & GCD Calculator Find the LCM and GCD (HCF) of a set of integers. Mathematics
Quadratic Equation Solver Solve ax² + bx + c = 0 with real or complex roots. Mathematics
Right Triangle Calculator Find the hypotenuse, area, perimeter and angles of a right triangle. Mathematics
Circle Calculator Find a circle’s area, circumference and diameter from the radius. Mathematics
Percent Error Calculator Calculate the percent error between an experimental and true value. Mathematics
Standard Deviation Calculator Find mean, variance and standard deviation of a data set. Mathematics
Prime Number Checker Check whether a number is prime and see its factors. Mathematics
SIP Calculator Project the future value of a monthly SIP investment. Investment
Retirement Calculator Estimate your retirement savings from contributions and returns. Investment
Savings Goal Calculator Find how long it takes to reach a savings goal. Finance and Loans
Credit Card Payoff Calculator See how long and how much it costs to clear a card balance. Finance and Loans
Salary Calculator Convert pay between annual, monthly, weekly, daily and hourly. Finance and Loans
ROI Calculator Calculate return on investment and net profit. Business and Ecommerce
ROAS Calculator Calculate return on ad spend from revenue and ad cost. Business and Ecommerce
Break-Even Calculator Find the units and revenue needed to break even. Business and Ecommerce
CPM Calculator Solve CPM, cost or impressions — enter any two. Business and Ecommerce
CTR Calculator Calculate click-through rate from clicks and impressions. Business and Ecommerce
Conversion Rate Calculator Calculate conversion rate from conversions and visitors. Business and Ecommerce
Rental Yield Calculator Calculate gross and net rental yield on a property. Real Estate
Cap Rate Calculator Calculate the capitalization rate from NOI and value. Real Estate
Down Payment Calculator Work out the down payment amount and loan needed. Real Estate
Home Affordability Calculator Estimate the home price you can afford from your income. Real Estate
Life Insurance Calculator Estimate how much life cover you need with a simple needs analysis. Insurance
Human Life Value Calculator Estimate your economic life value as the present value of future income. Insurance
Term Life Premium Estimator Estimate a term-life premium from your coverage and a quoted rate. Insurance
Health Insurance Cost Estimator Estimate your yearly health cost from premium, deductible and coinsurance. Insurance
Insurance Claim Calculator Decide whether making a claim is worth it versus paying out of pocket. Insurance
Pregnancy Due Date Calculator Estimate your baby’s due date, conception date and current pregnancy week from your last period. Health and Nutrition
Body Fat Percentage Calculator Estimate your body fat percentage with the U.S. Navy circumference method. Fitness
Ideal Weight Calculator Find your ideal body weight from four classic formulas plus a healthy BMI range. Fitness
Roman Numeral Converter Convert numbers to Roman numerals and back — just type either one. Mathematics
Hash Generator (SHA-256) Generate SHA-256, SHA-1, SHA-384 and SHA-512 hashes from any text. Security and Privacy
Lorem Ipsum Generator Generate placeholder “lorem ipsum” paragraphs, sentences or words for mockups. Text and Writing
Time Duration Calculator Work out the hours, minutes and seconds between two times. Date and Time
Digital Storage Converter Convert between bits, bytes, KB, MB, GB, TB and binary KiB/MiB/GiB. Unit Converters
Scientific Calculator Evaluate math expressions with functions, powers, roots, logs and trigonometry. Mathematics
Percentage Increase / Decrease Calculator Calculate the percentage increase or decrease between two values. Mathematics
Calorie Calculator Find your daily calorie target for losing, maintaining or gaining weight, plus a macro split. Health and Nutrition
Auto Loan Calculator Estimate your monthly car payment including trade-in, sales tax and fees. Finance and Loans
Inflation Calculator See how inflation erodes the buying power of money over time at a rate you choose. Finance and Loans
Running Pace Calculator Work out your running pace and speed from a distance and time. Fitness
Countdown Calculator Count the days, hours and minutes until (or since) any date. Date and Time
Number to Words Converter Spell any number out in words, including decimals and negatives. Mathematics
Aspect Ratio Calculator Find the aspect ratio of any width and height, and scale dimensions proportionally. Productivity
Sleep Calculator Find the best times to sleep or wake based on 90-minute sleep cycles. Health and Nutrition
Feels-Like Temperature Calculator Calculate the apparent temperature from wind chill or heat index. Science and Engineering
Text to Binary Converter Convert text to binary and binary back to text (UTF-8, 8-bit). Developer Tools
Text Diff Checker Compare two blocks of text and highlight added and removed lines. Developer Tools
Date Calculator (Add / Subtract) Add or subtract days, weeks, months or years from any date. Date and Time
Color Contrast Checker Check the WCAG contrast ratio between two colours for accessible text. Developer Tools
IP Subnet Calculator Calculate the network, broadcast, mask, host range and host count from an IP and CIDR. Developer Tools
Reading Time Calculator Estimate how long a piece of text takes to read or read aloud. Text and Writing
PX to REM Converter Convert between pixels and rem/em for any root font size. Developer Tools
Cooking Measurement Converter Convert cooking volumes between cups, tablespoons, teaspoons, ml and more. Unit Converters
Electricity Cost Calculator Work out what an appliance costs to run per day, month and year. Productivity
Markdown to HTML Converter Convert Markdown to clean HTML with a live preview. Developer Tools
Beaufort Wind Scale Calculator Convert a wind speed to its Beaufort force number and description. Science and Engineering
Fuel Economy Converter Convert fuel economy between MPG (US/UK), L/100km and km/L. Travel and Vehicle
Time Zone Converter Convert a date and time between world time zones, with daylight saving handled. Date and Time
CAGR Calculator Calculate the compound annual growth rate between a starting and ending value. Investment
Ovulation Calculator Estimate your ovulation date and most fertile days from your last period. Health and Nutrition
Square Footage Calculator Calculate the area of a room or space in square feet and square metres. Real Estate
Concrete Calculator Estimate the concrete volume and bags needed for a slab. Productivity
Reverse Tax (VAT/GST) Calculator Work out the price before tax and the tax amount from a tax-inclusive price. Business and Ecommerce
Paint Calculator Estimate how much paint you need for a given wall area and number of coats. Productivity
Resistor Color Code Calculator Decode a 4-band resistor’s colour code into its resistance and tolerance. Science and Engineering
Stopwatch & Timer A full-screen online stopwatch with laps, and a countdown timer with an alarm. Productivity
Tile Calculator Work out how many tiles you need for a floor or wall, including waste. Productivity
Gravel & Mulch Calculator Estimate the volume and weight of gravel, mulch, sand or topsoil for an area. Productivity
Dog Age Calculator Convert your dog’s age into human years, adjusted for size. Productivity
Calories Burned Calculator Estimate the calories you burn during an activity from its intensity and your weight. Fitness
Water Intake Calculator Estimate how much water to drink each day from your weight and activity. Health and Nutrition
One Rep Max Calculator Estimate your one-rep max from a weight and the reps you can lift. Fitness
Slope & Grade Calculator Calculate slope as a percentage grade, angle and ratio from rise and run. Science and Engineering
Pregnancy Weight Gain Calculator See the recommended weight gain in pregnancy for your pre-pregnancy BMI. Health and Nutrition
Download Time Calculator Estimate how long a file takes to download at a given connection speed. Developer Tools
Stair Calculator Work out the number of steps, riser height, run and stringer length for a staircase. Productivity
Net Worth Calculator Calculate your net worth from your total assets and liabilities. Finance and Loans
Debt-to-Income Ratio Calculator Find your debt-to-income ratio — a key number lenders use for mortgages. Real Estate
Annuity Payout Calculator See the monthly income a lump sum can provide over a set number of years. Investment
Pool Volume Calculator Calculate how many gallons or litres of water a pool holds. Productivity
Overtime Pay Calculator Calculate total pay including overtime at time-and-a-half or any multiplier. Business and Ecommerce
Ring Size Converter Convert a finger measurement into US, UK and EU ring sizes. Productivity
Crypto Profit/Loss Calculator See your profit, loss and ROI on a crypto trade, including fees. Investment
Stock Average Price Calculator Find your weighted average cost per share across several buys. Investment
Rent vs Buy Calculator Compare the true cost of buying a home versus renting over your stay. Real Estate
Board Feet Calculator Work out the board feet of lumber and the total cost. Productivity
Fence Calculator Estimate posts, rails and pickets for a fence by length. Productivity
Blood Alcohol (BAC) Calculator Estimate your blood alcohol content from drinks, weight and time. Health and Nutrition
Typing Speed Test Measure your typing speed in WPM and your accuracy. Productivity
Wallpaper Calculator Work out how many rolls of wallpaper you need for a room. Productivity
CSS Box Shadow Generator Design a CSS box-shadow with live sliders and copy the code. Developer Tools
CSS Border Radius Generator Round each corner with live sliders and copy the border-radius CSS. Developer Tools
CSS Cubic-Bezier Generator Craft a CSS easing curve with a live preview and copy the cubic-bezier(). Developer Tools
HTML Entity Encoder / Decoder Encode text to HTML entities or decode entities back to text. Developer Tools
JWT Decoder Decode a JSON Web Token to read its header and payload. Developer Tools
Colour Shades & Tints Generator Generate a tint-to-shade scale from any colour with hex codes. Developer Tools
Amortization Calculator See your monthly payment and a full amortization schedule with total interest. Finance and Loans
Hours Calculator Work out hours between a start and end time, minus breaks. Date and Time
Length Converter Convert between metres, feet, inches, miles and more — see every unit at once. Unit Converters
Weight Converter Convert between kilograms, pounds, ounces, stones and more. Unit Converters
Temperature Converter Convert between Celsius, Fahrenheit and Kelvin. Unit Converters
Speed Converter Convert between km/h, mph, m/s, knots and ft/s. Unit Converters
Area Converter Convert between square metres, square feet, acres, hectares and more. Unit Converters
Volume Converter Convert between litres, gallons, millilitres, cups and more. Unit Converters
Power Converter Convert between watts, kilowatts, horsepower and BTU/h. Unit Converters
Angle Converter Convert between degrees, radians, gradians and more. Unit Converters
Time Unit Converter Convert between seconds, minutes, hours, days, weeks and years. Unit Converters
Image Resizer Resize an image to exact dimensions in your browser — no upload. Image Tools
Image to Base64 Convert an image to a Base64 data URI for inline embedding. Image Tools
Currency Converter Convert between 30+ currencies with live exchange rates. Unit Converters
Crypto Converter Convert Bitcoin, Ethereum and other coins to USD (and each other) at live prices. Investment
Historical Currency Converter Convert currencies using the ECB exchange rate from any past date (back to 1999). Unit Converters
Barcode Generator Create a Code 128 barcode from text or numbers and download the SVG. Productivity
Image Format Converter Convert images between PNG, JPG and WebP in your browser. Image Tools
Image Cropper Crop an image to an exact pixel region in your browser. Image Tools
PDF Merge Combine several PDF files into one — privately in your browser. PDF and File Tools
PDF Split Extract a page range from a PDF into a new file — privately. PDF and File Tools
Cron Expression Helper Decode a cron expression and see its next run times. Developer Tools
JSON to CSV Converter Convert JSON to CSV and CSV back to JSON, in your browser. Developer Tools
Regex Tester Test a regular expression live with match highlighting and capture groups. Developer Tools
Pomodoro Timer A focus timer that alternates work sessions with short and long breaks. Productivity
Morse Code Translator Translate text to Morse code and Morse code back to text. Text and Writing
Readability Score Check how easy your text is to read with Flesch scores. Text and Writing
IBAN Validator Check whether an IBAN is valid using the mod-97 checksum. Developer Tools
Credit Card Validator Check a card number with the Luhn algorithm and detect the brand. Developer Tools
Macro Calculator Split your daily calories into protein, carbs and fat. Health and Nutrition
URL Parser Break a URL into its protocol, host, path and query parameters. Developer Tools
Color Palette from Image Extract the dominant colours from an image as hex codes. Image Tools
Find & Replace Find and replace text, with optional regex and case matching. Text and Writing
Unit Price Comparison Compare two products by price per unit to find the better value. Business and Ecommerce
Day of the Week Find the weekday, day of year and ISO week for any date. Date and Time
Decimal to Fraction Convert a decimal to a simplified fraction, and back. Mathematics
Bitwise Calculator Compute AND, OR, XOR, NOT and bit shifts on two integers. Mathematics
Random Color Generator Generate random hex colours for your designs. Developer Tools
Text to ASCII Convert text to ASCII codes and ASCII codes back to text. Developer Tools
Word Frequency Counter Count how often each word appears and rank the most used. Text and Writing
Business Days Calculator Count the working days (Mon–Fri) between two dates. Date and Time
Strip HTML Tags Remove HTML tags and get clean plain text. Developer Tools
Statistics Calculator Find the mean, median, mode, range and standard deviation. Mathematics
Permutations & Combinations Calculate permutations (nPr) and combinations (nCr). Mathematics
Leap Year Checker Check whether a year is a leap year and find the next one. Date and Time
Fancy Text Generator Turn plain text into 15+ copy-paste Unicode styles — bold, italic, script, cursive and more. Text and Writing
Bionic Reading Converter Bold the first part of every word to help your eyes skim and read faster. Text and Writing
NATO Phonetic Alphabet Converter Spell any text in the NATO phonetic alphabet — Alfa, Bravo, Charlie… Text and Writing
Keyword Density Checker Analyse text for one, two and three-word keyword frequency and density. SEO and Website Tools
Images to PDF Combine JPG and PNG images into a single PDF — privately in your browser. PDF and File Tools
Delete PDF Pages Remove unwanted pages from a PDF and keep the rest — privately. PDF and File Tools
Rotate PDF Rotate PDF pages 90, 180 or 270° and save — privately in your browser. PDF and File Tools
Image Metadata (EXIF) Viewer & Remover View a photo’s EXIF metadata and download a copy with all of it stripped. Image Tools
401(k) Calculator Project your 401(k) balance at retirement, including employer match and growth. Investment
Roth IRA Calculator Project the tax-free value of your Roth IRA at retirement. Investment
Budget Calculator (50/30/20) Split your monthly income into needs, wants and savings with the 50/30/20 rule. Finance and Loans
PayPal & Stripe Fee Calculator Work out payment-processing fees, or how much to charge to receive a target amount. Business and Ecommerce
Sample Size Calculator Find how many people to survey for a given confidence level and margin of error. Mathematics
NPV Calculator Calculate the net present value of a project from its cash flows and discount rate. Investment
IRR Calculator Find the internal rate of return for an investment’s cash flows. Investment
APY Calculator (Effective Annual Rate) Convert a nominal interest rate into its effective annual yield (APY). Investment
Rule of 72 Calculator Estimate how long it takes to double your money, or the return needed. Investment
Dividend Yield Calculator Work out a stock’s dividend yield and your annual dividend income. Investment
Weighted Average Calculator Calculate a weighted average from values and their weights. Mathematics
Pythagorean Theorem Calculator Find the hypotenuse or a missing leg of a right triangle with a² + b² = c². Mathematics
Z-Score Calculator Find the z-score (standard score) and percentile of a value. Mathematics
Exponent & Logarithm Calculator Raise a base to a power, or take the logarithm of a number to any base. Mathematics
Distance & Midpoint Calculator Find the distance, midpoint and slope between two points. Mathematics
Fraction Calculator Add, subtract, multiply or divide fractions and mixed numbers, with steps. Mathematics
Number Sequence Calculator Detect arithmetic or geometric sequences and find the nth term and sum. Mathematics
Base32 Encoder & Decoder Encode text to Base32 or decode Base32 back to text (RFC 4648). Developer Tools
Email & URL Extractor Pull every email address and URL out of any block of text. Text and Writing
List Randomizer Shuffle a list, pick random winners, or split it into fair teams. Random Generators
Probability Calculator Work out the probability of an event, or of two independent events. Mathematics
Depreciation Calculator Build a depreciation schedule using straight-line or accelerated methods. Business and Ecommerce
Military Time Converter Convert between 12-hour and 24-hour (military) time. Date and Time
Words to Pages Calculator Estimate how many pages a word count fills, or vice versa. Text and Writing
Protein Intake Calculator Find your recommended daily protein from your weight and goal. Health and Nutrition
Molar Mass Calculator Find the molar mass and percent composition of any chemical formula. Science and Engineering
Linear Regression Calculator Find the least-squares line of best fit, correlation and R² for your data. Mathematics
Commission Calculator Work out flat or tiered sales commission and total pay. Business and Ecommerce
Waist-to-Hip Ratio Calculator Calculate your waist-to-hip ratio and health-risk band. Health and Nutrition
Present & Future Value Calculator Find the future value of money today, or the present value of a future sum. Investment
Kinetic & Potential Energy Calculator Calculate kinetic energy (½mv²) or gravitational potential energy (mgh). Science and Engineering
Target Heart Rate Calculator Find your maximum heart rate and training zones in beats per minute. Fitness
Lean Body Mass Calculator Estimate your lean body mass and fat mass using the Boer formula. Health and Nutrition
HTML Table Generator Generate clean, ready-to-paste HTML table code from data or dimensions. Developer Tools
Gear Ratio Calculator Calculate gear ratio, output speed and torque from gear teeth. Travel and Vehicle
Mortgage Payoff Calculator See how extra payments cut your mortgage term and interest. Real Estate
Frequency & Wavelength Converter Convert between frequency and wavelength using the speed of light. Unit Converters
Robots.txt Tester Check whether a URL is allowed or blocked by a robots.txt file. SEO and Website Tools
Long Division Calculator Divide whole numbers with the full long-division steps and remainder. Education
Burn Rate & Runway Calculator Calculate your monthly burn rate and how many months of runway you have. Business and Ecommerce
FIRE Calculator Find your financial-independence number and how long until you reach it. Investment
Projectile Motion Calculator Find range, maximum height and time of flight for a projectile. Science and Engineering
Birthday Countdown Calculator Count the days until your next birthday and the age you will turn. Date and Time
Upside Down Text Generator Flip your text upside down with Unicode characters. Text and Writing
Truth Table Generator Generate a truth table from a boolean logic expression. Developer Tools
Significant Figures Calculator Round a number to significant figures or decimals, and count its sig figs. Mathematics
VO2 Max Calculator Estimate your VO2 max from a Cooper run test or resting heart rate. Fitness
Body Surface Area Calculator Calculate body surface area (BSA) using the Mosteller or Du Bois formula. Health and Nutrition
Customer Lifetime Value Calculator Calculate customer lifetime value and the LTV:CAC ratio. Business and Ecommerce
Coordinate Converter Convert coordinates between decimal degrees and degrees/minutes/seconds. Travel and Vehicle
CSS Triangle Generator Generate pure-CSS triangles with a live preview and copy-ready code. Developer Tools
Emergency Fund Calculator Work out your emergency-fund target and how long to reach it. Finance and Loans
Blood Pressure Calculator Classify a blood-pressure reading and find the mean arterial pressure. Health and Nutrition
Molarity Calculator Calculate the molarity of a solution from moles or mass and volume. Science and Engineering
Letter Frequency Counter Count how often each letter appears in your text. Text and Writing
P/E Ratio Calculator Calculate the P/E ratio, earnings yield and PEG of a stock. Investment
Text Repeater Repeat any text a set number of times with your chosen separator. Text and Writing
ABV Calculator Calculate alcohol by volume (ABV) from original and final gravity. Science and Engineering
Property Tax Calculator Estimate annual property tax from the assessed value and rate. Real Estate
XML Formatter Beautify or minify XML with proper indentation. Developer Tools
EBITDA Calculator Calculate EBITDA and EBITDA margin from your income statement. Business and Ecommerce
Trigonometry Calculator Find sine, cosine, tangent and their reciprocals for any angle. Mathematics
Decibel Calculator Convert ratios to decibels and combine multiple sound levels. Science and Engineering
Moon Phase Calculator Find the Moon’s phase and illumination for any date. Date and Time
Pig Latin Translator Translate English text into Pig Latin. Text and Writing
GFR Calculator Estimate kidney function (eGFR) from serum creatinine with CKD-EPI 2021. Health and Nutrition
Refinance Calculator Compare your current loan with a refinance and find the break-even point. Finance and Loans
Wire Gauge (AWG) Calculator Convert AWG to diameter, area and resistance. Science and Engineering
Steps to Miles Calculator Convert a step count into miles and kilometres. Fitness
Tab to Space Converter Convert tabs to spaces or spaces to tabs in your code. Developer Tools
CBM Calculator Calculate shipping volume (CBM) and volumetric weight from carton sizes. Business and Ecommerce
Bond Price Calculator Price a bond from its coupon, yield and time to maturity. Investment
Roman Numeral Date Converter Convert a date into Roman numerals. Date and Time
BTU Calculator Estimate the air-conditioner BTU needed to cool a room. Science and Engineering
Hreflang Tag Generator Generate hreflang link tags for multilingual and regional pages. SEO and Website Tools
Take-Home Pay Calculator Work out your net take-home pay after tax and deductions. Finance and Loans
Cash-on-Cash Return Calculator Calculate the cash-on-cash return on a rental property. Real Estate
CRC32 Checksum Calculator Compute the CRC-32 checksum of text. Developer Tools
Random Word Generator Generate random words for brainstorming, naming and games. Random Generators
Tire Size Calculator Find tire dimensions and compare two sizes for speedometer error. Travel and Vehicle
APR Calculator Find a loan’s true APR including upfront fees. Finance and Loans
Gross Rent Multiplier Calculator Calculate the gross rent multiplier (GRM) of a property. Real Estate
Acronym Generator Build an acronym from the first letters of a phrase. Text and Writing
Voltage Drop Calculator Calculate the voltage drop over a wire run. Science and Engineering
Matrix Calculator Find the determinant, inverse, transpose or trace of a matrix. Mathematics
Race Time Predictor Predict your race time at a new distance from a known result. Fitness
Auto Lease Calculator Estimate a monthly car-lease payment from price, residual and money factor. Finance and Loans
Horsepower Calculator Calculate horsepower from torque, trap speed or quarter-mile ET. Travel and Vehicle
JSON to TypeScript Generate TypeScript interfaces from a JSON sample. Developer Tools
Solar Panel Calculator Estimate the solar system size and number of panels you need. Science and Engineering
Line Counter Count the lines in your text, including blank and unique lines. Text and Writing
Sharpe Ratio Calculator Measure risk-adjusted return from your return, the risk-free rate and volatility. Investment
Battery Life Calculator Estimate how long a battery lasts from its capacity (mAh) and the device current draw (mA). Science and Engineering
Text to Code Ratio Checker Measure the share of visible text versus HTML code on a page. SEO and Website Tools
WACC Calculator Work out the weighted average cost of capital from equity, debt, their costs and the tax rate. Business and Ecommerce
Proportion Calculator Solve a proportion a : b = c : d by leaving the unknown value blank. Mathematics
PPI Calculator Work out screen pixel density (PPI) from the resolution and diagonal size. Developer Tools
Loan-to-Value (LTV) Calculator Find your loan-to-value ratio from the loan amount and property value. Real Estate
Week Number Calculator Find the ISO 8601 week number for any date, plus the weekday and ISO year. Date and Time
Churn Rate Calculator Calculate customer churn and retention rates, with optional revenue churn. Business and Ecommerce
Modulo Calculator Find a mod n — the remainder and quotient of a division. Mathematics
Stopping Distance Calculator Estimate reaction, braking and total stopping distance at any speed. Travel and Vehicle
Specific Heat Calculator Solve Q = m·c·ΔT for heat energy, mass, specific heat or temperature change. Science and Engineering
Lottery Number Generator Generate random lottery numbers for popular games or a custom draw. Random Generators
Triangle Area Calculator Find the area of a triangle from base and height, three sides, or two sides and an angle. Mathematics
Car Affordability Calculator Find the car price you can afford from a monthly payment, rate and term. Finance and Loans
Weighted Grade Calculator Work out your final grade from each item's score and weight. Education
CAC Calculator Calculate customer acquisition cost, plus LTV:CAC ratio and payback. Business and Ecommerce
Volume Calculator Find the volume of a cube, box, sphere, cylinder or cone. Mathematics
Barbell Plate Calculator Work out which plates to load on each side of the bar for a target weight. Fitness
Price Per Square Foot Calculator Find the price per square foot or metre from a total price and floor area. Real Estate
pH Calculator Find pH, pOH and ion concentrations for a solution. Science and Engineering
A1C Calculator Convert between A1C and estimated average glucose (eAG). Health and Nutrition
Password Entropy Calculator Measure a password's entropy in bits and estimate crack time. Security and Privacy
Prime Factorization Calculator Break a whole number into its prime factors. Mathematics
Chmod Calculator Convert Unix file permissions between octal and symbolic form. Developer Tools
Fibonacci Calculator Generate the Fibonacci sequence, the nth term and the running sum. Mathematics
Average Order Value (AOV) Calculator Work out your average order value from revenue and number of orders. Business and Ecommerce
HTML Minifier Minify HTML by removing comments and collapsing whitespace. Developer Tools
Pendulum Calculator Find the period of a simple pendulum from its length, or the reverse. Science and Engineering
Wilks Calculator Calculate your Wilks score to compare powerlifting totals across bodyweights. Fitness
Caesar Cipher Encode or decode text with a Caesar shift cipher, including ROT13. Text and Writing
HTTP Status Code Lookup Look up the meaning of any HTTP status code. Developer Tools
Hooke's Law Calculator Solve F = k·x for spring force, spring constant or displacement. Science and Engineering
Engine Displacement Calculator Calculate engine displacement from bore, stroke and cylinder count. Travel and Vehicle
DRIP Calculator Project investment growth with dividends reinvested over time. Investment
Schema Markup Generator Build valid JSON-LD structured data for Article, Product, LocalBusiness, Organization, Event and Breadcrumb. SEO and Website Tools
Meta Tags Analyzer Audit a page’s title, description, canonical, robots, Open Graph and Twitter tags against 12 SEO checks. SEO and Website Tools
XML Sitemap Generator Turn a list of URLs into a valid XML sitemap with priority, change frequency and last-modified dates. SEO and Website Tools
YAML to JSON Converter Convert YAML to JSON and JSON back to YAML, with validation and clear error messages. Developer Tools
JSON to XML Converter Convert JSON to XML and XML back to JSON, with attributes, arrays and CDATA handled correctly. Developer Tools
MD5 Hash Generator Generate an MD5 or HMAC-MD5 hash of any text, and verify it against an expected value. Security and Privacy
Fake Name Generator Generate realistic test identities — name, email, phone, address, date of birth and a Luhn-valid test card. Random Generators
Invisible Character Generator Copy blank and zero-width Unicode characters, with a verifier that shows exactly which codepoints you have. Text and Writing
YouTube Thumbnail Downloader Paste a YouTube link and get every thumbnail size, from 120×90 up to 1280×720 HD. Image Tools
CSS Glassmorphism Generator Build a frosted-glass card with backdrop blur, tint and shadow, and copy the CSS. Developer Tools
CSS clip-path Generator Clip elements into circles, hexagons, stars, arrows and custom polygons with a live preview. Developer Tools
CSS Loader Generator Build a pure-CSS loading spinner or progress animation — no JavaScript, no images. Developer Tools
Debt Payoff Calculator Compare the snowball and avalanche methods across all your debts and see exactly when you will be debt-free. Finance and Loans
Citation Generator Build APA 7, MLA 9, Chicago and Harvard references for websites, books and journal articles. Education
NPS Calculator Calculate your Net Promoter Score from response counts or raw 0–10 survey scores. Business and Ecommerce
Add Watermark to PDF Stamp text across every page of a PDF with adjustable opacity, rotation and tiling. PDF and File Tools
Add Page Numbers to PDF Number the pages of a PDF with your choice of format, position and starting number. PDF and File Tools
Student Loan Calculator Work out student loan payments including grace-period interest capitalisation and extra payments. Finance and Loans
Financial Ratio Calculator Calculate liquidity, leverage, profitability and efficiency ratios from your financial statements. Business and Ecommerce
Ad Revenue Calculator Estimate display-ad earnings from your traffic using RPM, or CTR and cost per click. Business and Ecommerce
LLM API Cost Calculator Work out what an AI API will cost per request, per month and per year from token counts. Developer Tools
SVG Blob Generator Generate smooth organic blob shapes as clean SVG, with a seed you can reproduce. Image Tools
SVG Pattern Generator Create seamless tiling background patterns as SVG or a ready-to-paste CSS rule. Image Tools
Chart Maker Paste your data and get a clean bar, line or pie chart to download as SVG. Productivity
BCD & Gray Code Converter Convert between decimal, binary, BCD and Gray code in either direction. Developer Tools
Markdown Table Generator Turn CSV, TSV or spreadsheet data into a properly aligned Markdown table. Developer Tools
Business Name Generator Generate business name ideas from your keyword using real branding patterns. Business and Ecommerce
Invoice Generator Create a professional invoice with line items, tax and totals, and download it as a PDF. Business and Ecommerce
ZIP Maker & Extractor Create ZIP archives or open existing ones — entirely in your browser, with no upload. PDF and File Tools
SQL Formatter Beautify or minify SQL with clause indentation and consistent keyword casing. Developer Tools
Code Beautifier Format HTML, CSS and JavaScript with proper indentation — language detected automatically. Developer Tools
Bcrypt Generator & Checker Generate a bcrypt password hash at any cost factor, or check a password against one. Security and Privacy
File Checksum Verifier Compute a file’s SHA checksum and compare it against the published value. Security and Privacy
301 Redirect Generator Turn a list of old and new URLs into .htaccess, Nginx or Netlify redirect rules. SEO and Website Tools
JSON Schema Generator Generate a draft-07 JSON Schema from a sample JSON document, with format detection. Developer Tools
Email Signature Generator Build a clean HTML email signature that renders correctly in Gmail and Outlook. Business and Ecommerce
Freelance Rate Calculator Work out the hourly rate you must charge to reach a target take-home income. Business and Ecommerce
Loan Comparison Calculator Compare up to three loan offers side by side, including fees, to find the true cheapest. Finance and Loans
Recipe Scaler Scale a recipe up or down, keeping quantities as fractions you can actually measure. Productivity
Blood Type Calculator Work out which blood types a child can inherit from both parents. Health and Nutrition
Colour Blindness Simulator See how a colour or a colour pair looks to people with each type of colour blindness. Image Tools
A/B Test Significance Calculator Test whether the difference between two conversion rates is statistically significant. Mathematics
Time Zone Meeting Planner Find the hours that fall inside the working day for everyone, across up to 8 time zones. Date and Time
Security Headers Checker Grade your site’s HTTP response headers against eight security checks. Security and Privacy
Uptime & SLA Calculator See how much downtime an availability target allows, per day, month and year. Developer Tools
YouTube Earnings Calculator Estimate YouTube ad income from views using RPM, or from CPM and the revenue split. Business and Ecommerce
Engagement Rate Calculator Calculate social media engagement rate by followers or by reach, with platform benchmarks. Business and Ecommerce
Video File Size Calculator Work out a video’s file size from its bitrate, or the bitrate needed to hit a size. Developer Tools
EV Charging Cost Calculator Work out what a charge costs, how long it takes, and how it compares with petrol. Travel and Vehicle
Shoe Size Converter Convert shoe sizes between US, UK, EU and centimetres for men, women and kids. Unit Converters
PTO Accrual Calculator Work out how much paid leave you accrue each period and what your balance is. Business and Ecommerce
Image Flip & Rotate Rotate an image by 90, 180 or 270 degrees, or mirror it horizontally and vertically. Image Tools
Circle Crop Crop any photo into a circle or rounded square with a transparent background. Image Tools
Pixelate & Censor Image Pixelate, blur or black out part of an image to hide faces, plates or personal data. Image Tools
Image Colour Analyser Find an image’s average colour and its most-used colours, with hex codes. Image Tools
Image Filters & Effects Apply grayscale, sepia, invert, brightness, contrast and saturation to any image. Image Tools
Add Border to Image Add a solid border or Polaroid-style frame around any image. Image Tools
Image Splitter Cut an image into a grid of tiles and download them all as a ZIP. Image Tools
Watermark Image Stamp text across a photo, in one corner or tiled over the whole image. Image Tools
Meme Generator Add classic top and bottom captions to any image, with the traditional outlined text. Image Tools
Favicon Generator Generate a full favicon set, web manifest and HTML snippet from an image or a letter. Image Tools
PDF to JPG Turn every page of a PDF into a JPG, PNG or WebP image. PDF and File Tools
Extract Text from PDF Pull the selectable text out of a PDF and download it as a .txt file. PDF and File Tools
Compress PDF Make a PDF smaller — losslessly, or by rasterising it for a bigger saving. PDF and File Tools
PDF Metadata Viewer See the hidden author, dates and software inside a PDF — then clear them. PDF and File Tools
Online Notepad A distraction-free notepad that saves itself in your browser. Productivity
To-Do List A checklist that remembers itself, with priorities and progress. Productivity
Text to Speech Have any text read aloud using the voices already on your device. Productivity
Click Counter A tally counter with up to eight named counts and keyboard shortcuts. Productivity
Photo Collage Maker Combine several photos into one image, in a grid, row or column. Image Tools
Screen Resolution Checker What resolution, viewport and pixel ratio this device is actually reporting. Developer Tools
Tone Generator Play a pure tone at any frequency from 20 Hz to 20 kHz. Science and Engineering
Dimensional Weight Calculator The billable weight a carrier charges on — actual or dimensional, whichever is greater. Business and Ecommerce