Calculators Tools

Percentages, averages, ratios, fractions, discounts and tips — the small calculations that come up constantly, each with the working shown.

Work out percentages, percentage change and reverse percentages.

A plain calculator with a running history of what you typed.

Trigonometry, logarithms, powers and roots with degrees or radians.

Add a percentage to a number and see the amount added.

Subtract a percentage from a number and see what remains.

Compare two numbers where neither is the starting point.

Add, subtract, multiply and divide fractions, simplified.

Simplify ratios, solve proportions and split a total.

Mean, median, mode and range from a list of numbers.

Work out a sale price and how much you actually save.

Work out a tip and split the bill between people.