Random Number Generator
Generate one or more random numbers within any range.
How it works
This generator uses your browser's cryptographically secure random number source to pick integers uniformly within your chosen range. You can generate a single number — useful for settling a quick decision or picking a raffle winner — or a batch of numbers at once, optionally without repeats, similar to drawing lottery numbers.
Common uses
- Picking a random winner from a list of entries
- Rolling virtual dice or simulating games of chance
- Generating sample data for testing
- Making an unbiased random decision
Frequently asked questions
Is this truly random or just pseudo-random?
It uses JavaScript's built-in pseudo-random number generator, which is statistically random enough for everyday uses like games, raffles, sampling and decision-making, though it isn't cryptographically secure enough for security keys or gambling systems.
Can the same number be generated twice?
Yes, unless you use the "unique numbers" option - by default each generation is independent, so repeats are possible just like rolling real dice multiple times. Enable the no-repeat mode if you need distinct values, such as for a raffle.
What's a practical use for a random number generator?
Common uses include picking a raffle or giveaway winner, generating a random sample size, choosing teams fairly, deciding between options, or generating test data for a spreadsheet or app.