Random Number Generator

Generate truly random numbers

The Random Number Generator picks random numbers within any range you choose. Generate a single number or many at once, and optionally require them to be unique (no repeats). It uses your browser's cryptographically secure randomness for fair, unpredictable results — perfect for draws, games, sampling, and decisions.

What makes randomness "fair"?

Many simple generators rely on Math.random(), which is fine for casual use but is not cryptographically secure. This tool uses the Web Crypto API where available, which produces high-quality, unpredictable randomness. That matters when fairness counts — picking a giveaway winner, drawing lottery-style numbers, or anything where bias would be a problem.

How to use it

1. Set the minimum and maximum values.
2. Choose how many numbers to generate.
3. Tick no duplicates if each number must be unique.
4. Click Generate, then copy the results if needed.

Common uses

Use	Example settings
Pick a winner	1 to (number of entries), 1 result
Lottery-style draw	1 to 49, 6 results, unique
Dice or game roll	1 to 6
Random sample	1 to N, many results, unique

Unique vs repeatable

The no duplicates option is the key choice. For a raffle or lottery draw, you want unique numbers so no entry can be picked twice. For independent events like dice rolls, you want repeats allowed, because each roll is independent. The tool prevents impossible requests — like asking for more unique numbers than the range contains.

Tips

• For a giveaway, number your entries 1–N and generate one number.
• Generate many numbers at once to save time on bulk draws.
• Copy the results to paste into a spreadsheet or message.

Private and free

All numbers are generated in your browser. Nothing is uploaded, there is no sign-up, and the tool is completely free.