Math

Open a tool, enter a value, and copy the result. Everything runs in your browser. The language menu keeps you on the same tool.

Basic Calculator

One expression. Instant answer.

Find a percentage, ratio, or change.

Pick an integer within your range.

Simplify a ratio and scale it.

Mean, sum, range and count.

Enter an expression using +, −, ×, ÷, and parentheses. Multiplication and division come first; parentheses take priority.

Choose a percentage of a value, a ratio, or percentage change. Change = (new − previous) ÷ |previous| × 100.

Enter inclusive minimum and maximum integers, then choose Generate for a new result. Each integer in the range has equal probability.

Enter A and B for A:B, then C for the new first value. The ratio is reduced using the greatest common divisor; D = C × B ÷ A.

Enter up to 10,000 numbers separated by spaces, commas or semicolons. Average = sum ÷ count; minimum and maximum are also shown.