Fair random numbers on demand
A random number generator picks numbers from a range so that every value is equally likely. Use it for prize draws, picking a winner, choosing a sample, playing games, or when you simply cannot decide.
This tool asks your browser's built-in secure random source (the Web Crypto API), so the numbers are not predictable the way a simple formula might be. You can ask for whole numbers or decimals, allow or forbid repeats, and sort the results.
How the numbers are picked
Number = minimum + random fraction × (maximum − minimum + 1)
No repeats: shuffle the whole range and take the first n
Worked example
A lottery-style pick: 6 different numbers from 1 to 49
- Range
- 1 to 49
- Numbers drawn
- 6, no repeats
- Different possible draws
- 13,983,816
Every one of those draws is equally likely, including 1-2-3-4-5-6.
Good ways to use it
- Set the range from 1 to the number of people to pick a winner fairly.
- Turn on No repeats when you need several different winners.
- Use decimals to simulate measurements or sample data.
- Choose the Dice roll quick pick for a fair six-sided die.
Numbers are generated in your browser for entertainment and general use. Do not use them for gambling systems, cryptographic keys or passwords.