What is the Random Number Generator?
Generate random whole numbers in any range. Press Calculate for a new set.
Enter lowest number, highest number and how many numbers and the Random Number Generator returns random numbers. Results update as you type, and nothing you enter leaves your device.
How it is calculated
Each number is drawn uniformly at random between the lowest and highest values, inclusive
How to use it
- Enter lowest number.
- Enter highest number.
- Enter how many numbers.
- Read random numbers in the results panel. It updates as you type.
- Change any value to compare scenarios, or use Share to send the result as a link.
Worked example
Common questions
What formula does the Random Number Generator use?
It uses: Each number is drawn uniformly at random between the lowest and highest values, inclusive.
What do I need to use the Random Number Generator?
You need lowest number, highest number and how many numbers. Sensible starting values are filled in so you can see how it works straight away.
Is the Random Number Generator free, and is my data stored?
It is free with no sign-up. The calculation runs in your browser, so the values you enter are not sent to or stored on our server.