Random number generator

Pick one or many random numbers in any range, with or without repeats.

About this calculator

Choose the smallest and largest number, how many you want, and whether numbers can repeat. Tap generate to roll again.

Numbers are drawn with your browser's secure random generator, so every number in the range is equally likely.

Yes. Choose no repeats, for example 6 numbers from 1 to 59.

It uses your device's cryptographic random source, which is suitable for draws and games.

Trig, logs, powers, roots and brackets.

Percent of a number, percent change, increase or decrease.

Percent increase or decrease between two numbers.

Mean, median, mode and range of a list.

Standard deviation, variance and mean.

Add, subtract, multiply and divide fractions.