Random Number Generator
Fair random whole numbers or decimals in any range, with no-repeat and sort options.
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How to use
- Set the minimum, maximum and how many numbers you want.
- Choose whole numbers or decimals, and whether repeats are allowed.
- Press Generate, or try a preset such as a dice roll.
- Copy or download the results.
How it works
Numbers come from crypto.getRandomValues, the browser’s cryptographic random generator. Rejection sampling removes the small bias that the common “random % range” shortcut introduces, so every value is equally likely.
Limitations
- Up to 10,000 numbers at a time.
- This is for games, sampling and decisions — not for official lotteries or regulated draws.
Privacy
Numbers are generated in this browser tab. Nothing is uploaded or saved.
Local processing protects your data from being uploaded, but it cannot protect against a compromised device or malicious browser extensions.