Random Number Generator

Generate true random numbers instantly. Cryptographically secure (CSPRNG), no repeats, custom ranges. Perfect for giveaways, contests, and scientific sampling.

True vs Pseudo Random?

This tool uses CSPRNG (Cryptographically Secure Pseudo-Random Number Generator) via the modern `crypto.getRandomValues()` API. Unlike standard `Math.random()`, it provides unpredictable entropy suitable for cryptography, security keys, and impartial decision making.

Generated Numbers
Your random numbers will appear here

Click "Generate" to create random numbers

Settings
Customize your random number generation
1

Allow the same number to appear multiple times

Generate decimal numbers instead of integers

Comma-separated list of numbers to exclude