72+ free tools

Calculators, converters and tools that just work

Accurate results based on official definitions and standard formulas. No sign-up, no uploads, nothing to install.

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Free foreverFiles stay on your deviceWorks on any phone or computer

Unit & Currency Converters

Currency ConverterConvert between 160+ world currencies with daily updated exchange rates. Length ConverterConvert between metric and imperial length units: millimeters, centimeters, meters, kilometers, inches, feet, yards and miles. Weight & Mass ConverterConvert weight and mass: grams, kilograms, tonnes, ounces, pounds, stones, carats and tolas. Temperature ConverterConvert temperature between Celsius, Fahrenheit and Kelvin with the exact formulas. Area ConverterConvert area: square meters, square feet, square yards, acres, hectares, square kilometers, marla and kanal. Volume ConverterConvert volume and capacity: milliliters, liters, cubic meters, US and UK gallons, cups, pints, tablespoons and teaspoons. Speed ConverterConvert speed: kilometers per hour, miles per hour, meters per second, knots and feet per second. Time ConverterConvert time units: milliseconds, seconds, minutes, hours, days, weeks, months and years. Data Storage ConverterConvert digital storage: bits, bytes, KB, MB, GB, TB and the binary units KiB, MiB, GiB and TiB. Pressure ConverterConvert pressure: pascals, kilopascals, bar, psi, atmospheres, mmHg and torr. Energy ConverterConvert energy: joules, kilojoules, calories, kilocalories, watt-hours, kilowatt-hours and BTU. Power ConverterConvert power: watts, kilowatts, megawatts, mechanical and metric horsepower and BTU per hour. Fuel Economy ConverterConvert fuel consumption between liters per 100 km, kilometers per liter, US mpg and UK mpg. Angle ConverterConvert angles: degrees, radians, gradians, arcminutes, arcseconds and full turns. Frequency ConverterConvert frequency: hertz, kilohertz, megahertz, gigahertz and revolutions per minute. Force ConverterConvert force: newtons, kilonewtons, pounds-force, kilograms-force and dynes.

Finance & Investing Calculators

SIP CalculatorEstimate the future value of a monthly SIP in a mutual fund from your instalment, expected return and time period. Lumpsum Investment CalculatorCalculate how much a one-time investment could grow to at an expected annual return over any number of years. CAGR CalculatorFind the compound annual growth rate (CAGR) of an investment, stock, fund or business from its start value, end value and period. Mutual Fund Return CalculatorWork out your mutual fund units, current value, absolute return and annualised return (CAGR) from purchase NAV and current NAV. Expense Ratio CalculatorSee how much a mutual fund or ETF expense ratio costs you over time by comparing growth with and without fees. Stock Profit CalculatorCalculate profit or loss, return on investment and break-even price for a stock trade including commissions and tax. Stock Average Price CalculatorFind your average cost per share after buying the same stock at different prices (averaging down or up). Dividend Yield CalculatorCalculate a stock's dividend yield and the yearly and monthly income from the shares you hold. P/E Ratio CalculatorCalculate the price-to-earnings (P/E) ratio and earnings yield of a stock from its share price and earnings per share. ROI CalculatorCalculate return on investment (ROI) and annualised ROI from the amount invested and the amount returned. Position Size CalculatorWork out how many shares to buy so that a trade risks only a fixed percentage of your account if the stop-loss is hit. Rule of 72 CalculatorEstimate how many years it takes to double your money at a given annual return, with the exact figure for comparison. Compound Interest CalculatorCalculate compound interest with yearly, quarterly, monthly or daily compounding and optional monthly contributions. Simple Interest CalculatorCalculate simple interest and the total amount from principal, annual rate and time. Loan EMI CalculatorCalculate the monthly instalment (EMI), total interest and total repayment for a personal, car or home loan. Mortgage CalculatorEstimate your monthly mortgage payment including principal, interest, property tax and home insurance. Savings Goal CalculatorFind out how much to save each month to reach a target amount by a set date, including growth on what you already have. Inflation CalculatorSee what today's money will be worth in the future and how much prices rise at a given annual inflation rate. Profit Margin CalculatorCalculate profit margin, markup and profit from cost and selling price. Break-Even CalculatorFind the number of units and the revenue needed to cover your fixed and variable costs. Zakat CalculatorCalculate zakat at 2.5% on cash, gold, silver, investments and business assets after deducting debts.

Everyday Calculators

Percentage CalculatorCalculate X% of Y, what percent X is of Y, percentage increase or decrease, and add or subtract a percentage. Discount CalculatorCalculate the sale price and how much you save from a percentage discount, with optional sales tax. Tip CalculatorCalculate the tip and split the bill evenly between any number of people. VAT / GST CalculatorAdd VAT, GST or sales tax to a net price, or remove it from a gross price to find the amount before tax. Salary to Hourly CalculatorConvert an annual salary into hourly, daily, weekly, fortnightly and monthly pay. Fuel Cost CalculatorCalculate the fuel needed and the cost of a trip from distance, fuel consumption and fuel price. Electricity Cost CalculatorCalculate how much an appliance costs to run per day, month and year from its wattage and your price per kWh. BMI CalculatorCalculate your body mass index (BMI) and see your World Health Organization weight category and healthy weight range. BMR & Calorie CalculatorEstimate your basal metabolic rate (BMR) and daily calorie needs (TDEE) with the Mifflin–St Jeor equation. Age CalculatorCalculate exact age in years, months and days from a date of birth, plus total days and days until the next birthday. Date Difference CalculatorCount the days, weeks, months and weekdays between two dates.

Image & PDF Tools

Image CompressorReduce the file size of JPG, PNG and WebP images in your browser without uploading them. Image ResizerResize an image to exact pixel dimensions or by percentage, keeping the aspect ratio. Image ConverterConvert images between JPG, PNG and WebP formats instantly in your browser. Image to PDFCombine JPG and PNG images into a single PDF file, in the order you choose. Merge PDFJoin several PDF files into one document. Private: files are processed on your device. Split PDFExtract selected pages or page ranges from a PDF into a new file.

Generators & Text Tools

Password GeneratorCreate strong, random passwords with a cryptographically secure generator. QR Code GeneratorMake a QR code for a link, text, Wi-Fi network or contact and download it as an image. UUID GeneratorGenerate random version 4 UUIDs (GUIDs) one at a time or in bulk. Random Number GeneratorPick random numbers in any range, with or without repeats. Lorem Ipsum GeneratorGenerate placeholder text by paragraphs, sentences or words for designs and mock-ups. Word CounterCount words, characters, sentences and paragraphs and estimate reading time. Case ConverterChange text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase and more. JSON Formatter & ValidatorFormat, validate and minify JSON, with clear error messages for invalid input. Base64 Encode & DecodeEncode text to Base64 or decode Base64 back to text, with full Unicode support. Hash GeneratorGenerate SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text. Color ConverterConvert colors between HEX, RGB and HSL and pick a color visually.

Device Tests

Typing Speed TestMeasure your typing speed in words per minute (WPM) and your accuracy in one minute. Keyboard TesterPress every key to check that your keyboard registers it correctly. Click Speed TestMeasure your clicks per second (CPS) over 5, 10 or 30 seconds. Dead Pixel TestShow full-screen solid colors to find dead or stuck pixels on a monitor or phone. Microphone TestCheck that your microphone works and see its live input level. Webcam TestCheck that your camera works and see its resolution. The video stays on your device. What Is My Screen Resolution?See your screen resolution, viewport size, pixel ratio and color depth.