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Random Number Generator
Generate random numbers in any range — unique or repeating — using cryptographically strong randomness.
What this does
Generate one or more random whole numbers between a minimum and maximum you choose. Optionally require the numbers to be unique — perfect for raffles, lotteries and picking winners — using the browser's secure random source.
How to use it
- 1Set the minimum and maximum.
- 2Choose how many numbers to generate and whether they must be unique.
- 3Generate, then copy the result.
Examples
- Pick a number between 1 and 100
- Draw 6 unique numbers from 1–49 for a lottery line
Frequently asked questions
- Is the randomness truly random?
- It uses the browser's cryptographically secure generator (crypto.getRandomValues), which is far stronger than the ordinary pseudo-random function and free of predictable bias.
- Can I generate numbers without repeats?
- Yes. Turn on 'unique' and each number in the batch will be different, as long as the range is large enough to supply them.