Math calculators

Percentages and averages worked out instantly, with the formula and an example on every page.

All tools in this category

• Percentage CalculatorWork out a percentage of a number, what percent one number is of another, or the whole from a part. Free, instant and private, right in your browser.
• Percentage Change CalculatorFind the percentage increase or decrease between two numbers, or add or subtract a percentage from a value. Free and instant, right in your browser.
• Average CalculatorFind the average (mean), median, mode, sum and range of a list of numbers. Paste a column from a spreadsheet; it's free, instant and private.