About the Random Number Generator
Need a number between 1 and 100 — or a thousand of them? This random number generator produces integers in any range you set, one at a time or in bulk, and can exclude duplicates when every result must be unique. Unlike quick-and-dirty generators, it draws from your browser's cryptographically secure random source, the same generator used for encryption keys, so results carry no hidden pattern.
That makes it fair enough for things that matter: picking raffle and giveaway winners, drawing lottery-style numbers, assigning participants to study groups, sampling rows from a dataset, or settling who goes first. Set your minimum and maximum, choose how many numbers you want, decide whether repeats are allowed, and generate. Every draw is fresh, instant and impossible for anyone — including us — to predict or see.
Features
- Any range — from tiny spans to millions
- Generate one number or many in a single click
- Unique mode guarantees no duplicate results
- Cryptographically secure randomness, not a weak formula
- Perfect for raffles, draws and random picks
- Free, instant and fully in-browser — nothing logged
How to generate random numbers
- Set the minimum and maximum of your range.
- Choose how many numbers to generate at once.
- Decide whether duplicate values are allowed.
- Generate and copy your results instantly.
Frequently asked questions
How random are the numbers?
They come from the Web Crypto API, your browser's cryptographically secure random number generator. It gathers entropy from the operating system rather than computing values from a predictable seed, which is why the same source is trusted for passwords and encryption keys. For draws, games and sampling it's effectively unpredictable.
Can I generate numbers without duplicates?
Yes. Turn on the no-duplicates option and every number in the batch is unique — ideal for raffle tickets, bingo calls or assigning distinct IDs. Just make sure the range is at least as large as the quantity requested; you can't draw ten unique numbers from a range of five.
Is this fair for picking a giveaway winner?
Yes. Each value in the range has an equal probability of being drawn, the randomness source is cryptographically secure, and nothing is logged or stored — the draw happens entirely on your device. For transparency, you can screen-record the draw so entrants see the result being generated live.
What's the largest range I can use?
You can span anywhere within JavaScript's safe integer limits — comfortably into the trillions — and negative minimums work too. Every value stays equally likely regardless of range size, because the generator maps secure random bits onto your range without introducing bias toward any region.
Does the generator store or repeat my numbers?
No. Numbers are produced on your device the moment you click and are never transmitted or saved by us. Each generation is independent, so refreshing the page or generating again produces a completely new, unrelated draw — there is no seed that could reproduce a previous result.