Your range
Set a minimum and maximum — 1 to 100, 1 to 6 for a die, or whatever range you need.
Random Number Generator
Draw a random number in any range — one or many, whole or decimal, with or without repeats. Unbiased and entirely in your browser.
One or many
Draw several numbers at once, optionally without repeats — for draws, raffles or assignments.
Genuinely random
Uses the browser’s cryptographic generator with bias removed — an equal chance for every number.
Frequently asked questions
How does the random number generator work?
You set a minimum, maximum and how many numbers, and the tool draws numbers within that range. Values are whole by default; you can also set decimal places. Drawing uses the browser’s cryptographically secure generator (crypto.getRandomValues), not plain Math.random.
Are the numbers truly random and unbiased?
Yes. We use crypto.getRandomValues plus rejection sampling, which removes modulo bias — meaning every number in the range has an equal chance, with no slight tilt toward smaller values.
What does the "no repeats" option do?
When enabled, all drawn numbers are distinct — handy for draws, raffles or assignments without duplicates. It requires the range to contain at least as many values as the requested count; it does not apply when decimal places are used.
Can I draw several numbers at once?
Yes. Set "How many" (up to 1000) and press "Generate" to get a list. You can copy them all at once, comma-separated.
What is it used for?
Draws and picking winners, splitting teams, games, making an impartial decision, test data, and anywhere you need an unbiased random number.
Is my data uploaded anywhere?
No. Everything is generated locally in your browser via JavaScript — nothing is sent to a server.