Free online tools
and calculators
Fast, private, and simple. Everything runs in your browser, with no sign-up.
No tool matches that yet — more tools are being added every day.
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Popular tools
EMI Calculator
Monthly EMI, total interest and total payment for any loan.
SIP Calculator
What a monthly SIP could grow to, and how much you put in.
Paint Calculator
How much paint for a room? See your room fill up as you change the size.
BMI Calculator
Body mass index from height and weight. Informational only.
Percentage Calculator
Percentages, increases, decreases and what percent one number is of another.
All tools
Paint Calculator
How much paint for a room? See your room fill up as you change the size.
EMI Calculator
Monthly EMI, total interest and total payment for any loan.
SIP Calculator
What a monthly SIP could grow to, and how much you put in.
Compound Interest Calculator
How interest on interest grows your money over time.
GST Calculator
Add or remove GST and see the tax amount instantly.
Mortgage Calculator
Monthly mortgage payment, interest and total cost.
Profit Margin Calculator
Margin and markup from cost and selling price.
BMI Calculator
Body mass index from height and weight. Informational only.
BMR Calculator
Daily calories your body burns at rest. Informational only.
Calorie Calculator
Daily calorie needs from activity and goals. Informational only.
Percentage Calculator
Percentages, increases, decreases and what percent one number is of another.
Area Calculator
Area of a rectangle, circle or triangle from its dimensions.
Volume Calculator
Volume of a box, cylinder or sphere — plus the same volume in litres.
Fraction Calculator
Add, subtract, multiply or divide two fractions — simplified, with the decimal value alongside.
Average Calculator
Mean, median, mode and range for any list of numbers — paste them in and read all four at once.
GPA Calculator
Your weighted GPA from grade points and credits — enter up to four courses on a 10-point scale.
Attendance Calculator
Your attendance percentage, and the number of classes you can still miss without dropping below your target.
Marks Percentage Calculator
Your percentage from marks obtained and total marks — with how many marks you lost along the way.
Length Converter
Convert a length between millimetres, centimetres, metres, kilometres, inches, feet, yards and miles.
Weight Converter
Convert a weight between grams, kilograms, tonnes, ounces, pounds and stone.
Temperature Converter
Convert a temperature between Celsius, Fahrenheit and kelvin — all three scales shown at once.
Wallpaper Calculator
Work out how many rolls of wallpaper a room needs — wall area in, rolls out, rounded up.
Flooring Calculator
Boxes of laminate or vinyl planks for a floor — including the 10% waste allowance for cuts.
Drywall Calculator
Sheets of drywall and the screws to fix them — wall area in, sheets and screws out.
Roofing Calculator
Roof squares and shingle bundles — footprint and pitch in, squares and bundles out.
Brick Calculator
Bricks for a wall, plus a rough mortar guide — wall area in, bricks out, with 10% waste.
Topsoil Calculator
Topsoil for beds and lawns — area and depth in, volume and bags out.
Mulch Calculator
Mulch for garden beds — area, depth and bag size in, volume and bags out.
Paver Calculator
Pavers for a patio, plus base gravel and bedding sand — area and paver size in, quantities out.
Password Generator
A strong random password, made on your device — length and character sets in, password out.
CSS Minifier
Smaller CSS, in your browser — paste CSS in, minified CSS out, with bytes saved.
JavaScript Minifier
Smaller JavaScript, in your browser — paste JS in, minified JS out, with bytes saved.
HTML Minifier
Smaller HTML, in your browser — paste HTML in, minified HTML out, with bytes saved.
JSON Formatter
Readable JSON, in your browser — paste JSON in, formatted or minified JSON out, with errors explained.
Word Counter
How long is this text, really? Paste it in and see words, characters, sentences and reading time at once.
Character Counter
How many characters is that? Paste text in and see counts with spaces, without spaces, words and lines.
Case Converter
Fix the capitalisation in one pass — paste text in, pick a case, copy the result out.
Speed Calculator
How fast was that, on average? Enter distance and time and see the speed in three units.
Ohm's Law Calculator
Two values in, the third out — plus power. Pick what to calculate, enter the other two, done.
Cricket Run Rate Calculator
How fast is this innings going, and what will it reach? Enter runs, overs and target for both rates.
Cricket Net Run Rate Calculator
Where does this team stand on net run rate? Enter the runs and overs for both sides of the ledger.