How does the random number generator work?

It uses the Web Crypto API (crypto.getRandomValues) to generate true cryptographic randomness directly in your browser. This is more secure than Math.random().

Can I generate random numbers without duplicates?

Yes. Uncheck the 'Allow duplicates' option to ensure every generated number is unique within your set. The count will be limited to the size of your range.

Random Number Generator

Generate cryptographically random numbers with custom range and count. Free RNG tool.

How to use: Set min/max range and quantity, then generate random numbers.

Minimum

Maximum

Count

Allow duplicates