Calculators

A fast keyboard-friendly calculator with a running history tape you can reuse.

Trig, logs, powers, roots and factorials with degree/radian modes and a history tape.

Work out X% of Y, what percent one number is of another, and percentage change.

Calculate a tip and split the bill (and the tip) evenly across any number of people.

Add, subtract, multiply and divide fractions with simplified, mixed and decimal results.

Raise any base to any power, including negative and fractional exponents.

Find square roots and nth roots, with a simplified radical form.

Split an itemised bill across people with uneven shares, plus tax and tip.

Find the sale price and savings from a percentage or fixed discount, with tax.

Paste numbers to get mean, median, mode, range, sum and standard deviation.