Random number generator
Pick fair random numbers in any range, with an option for no repeats.
- Runs in your browser
- Nothing uploaded
- Works offline
- No sign-up
About this tool
Set a minimum and maximum, choose how many numbers you want, and optionally require them all to be different. The numbers come from your browser's cryptographic random source, so they are genuinely unpredictable - good for draws, sampling, picking a winner, or assigning an order.
How to use it
- Enter the lowest and highest number allowed (inclusive).
- Set how many numbers to draw.
- Tick "no repeats" for a unique set (like a raffle draw).
- Click "Generate" - copy the result if you need it.
Frequently asked questions
Are the numbers really random?
They use window.crypto.getRandomValues, the same cryptographically secure source browsers use for security keys - not Math.random.
Why can I not get a unique set?
With "no repeats" on, you cannot draw more numbers than the range contains - widen the range or lower the count.
Is anything sent to a server?
No. The numbers are generated on your device.
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