Random Number Generator
Generate one or more random whole numbers between a minimum and maximum value, with the option to allow or disallow repeated numbers.
About the Random Number Generator
Not all "random" is equal. Many simple random-number tools online use JavaScript's basic Math.random(), which is fine for a coin-flip game but is a predictable, non-cryptographic algorithm under the hood — not something you'd want behind a real raffle draw, a security-relevant sample, or anything where someone might have an incentive to predict or influence the outcome.
What this tool actually uses
This generator uses your browser's Web Crypto API (crypto.getRandomValues), the same category of randomness source used for cryptographic keys and security tokens — a meaningfully stronger guarantee of unpredictability than the default approach.
Common uses
- Picking a winner from a numbered raffle or giveaway entry list
- Selecting a random sample from a numbered dataset for review or audit
- Settling a decision fairly (dice rolls, team assignments, draw order)
- Generating test data or placeholder values during development
The "no repeated numbers" option draws each value from the pool exactly once, which matters for anything like a raffle where the same entry shouldn't be picked twice.
Frequently Asked Questions
Can I generate multiple unique numbers?
Yes — check “No repeated numbers” to draw each number only once, useful for things like raffle draws or picking a unique set.
How random is this really?
It uses your browser's Web Crypto API (crypto.getRandomValues), a cryptographically secure random source — stronger than the basic Math.random() many simple generators use.