Everyday calculators

Calculate X% of a number, what percent one number is of another, and percentage change.

Everyday calculators

Type a whole expression and see the result live: powers, roots, trigonometry in degrees or radians, factorials.

Everyday calculators

Find the sale price and how much you save from a percentage off — or work out the discount percent from a sale price.

Everyday calculators

Work out what a trip costs in fuel from distance, consumption and fuel price — with round trip and cost splitting between passengers.

Everyday calculators

Work out the tip and total from a bill and a percentage, and split it per person. Runs entirely in your browser.

Everyday calculators

Split a bill evenly among people, with an optional tip, reconciled to the exact total. Runs in your browser.

Everyday calculators

Paste a list of numbers to get the average (mean), plus sum, median, minimum, maximum and range. Runs in your browser.

Everyday calculators

Compare price per unit across products to find the best value on the shelf. Runs in your browser.

Everyday calculators

Work out how much a device costs to run — daily, monthly and yearly — from its power, hours of use and price per kWh.

Everyday calculators

Convert fuel economy between L/100km, km/L and US and UK miles per gallon — instantly, in your browser.

Everyday calculators

Simplify a ratio to its lowest terms, or solve a proportion A:B = C:D for the missing value.

Everyday calculators

Compare two tyre sizes: diameter, sidewall, circumference and how much the speedometer will read off.

Everyday calculators

Work out the hours and minutes between a start and end time, minus your break.

Everyday calculators