Random Number Generator
Generate random numbers, roll dice, flip coins, and pick lottery numbers. Uses cryptographic randomness.
Random Numbers
Quick Tools
Set your range and click Generate
About Random Numbers
True randomness in computers
JavaScript's Math.random() uses a pseudo-random number generator seeded by system entropy. For most practical uses like games, raffles, and simulations, this provides sufficient randomness.
Use cases
Random sampling for surveys or research
Picking raffle/lottery winners fairly
Generating test data for software development
Creating random passwords and tokens
Unique numbers (no duplicates)
Enable "No duplicates" to get numbers without repetition
Useful for creating random order lists or seating arrangements
Maximum unique numbers = range size (e.g., 1–50 gives max 50 unique)
🔒 All calculations happen in your browser — no data is sent to any server. Results are for informational purposes only.