Generate random numbers instantly — single, multiple, dice, lottery, or coin flip.
Maximum must be greater than minimum.
Click any example to instantly load and run it.
A random number generator (RNG) is a tool that produces numbers with no predictable pattern. Whether you need a single number for a raffle, dice rolls for a game, or a full lottery draw — an RNG gives you a fair, unbiased result every time.
Our tool uses JavaScript's crypto.getRandomValues() API for cryptographic-strength randomness. Each result is statistically independent — past results never influence future ones.
Choose a mode from the tabs at the top. Enter your desired range, then click Generate. Results appear instantly — no page reload. Use the Copy button to grab your result, or Reset to start fresh.
1. Giveaways & Raffles — Assign each participant a number, set your range to match entry count, and generate for a provably fair winner.
2. Board Games & RPGs — Use Dice Roller to simulate D4, D6, D8, D10, D12, D20, or D100. Roll multiple dice and see the total.
3. Lottery Simulation — Lottery Picker draws a full set of unique numbers — great for practice picks or simulating draws.
4. Random Sampling — Teachers and researchers use RNGs to select unbiased samples from a larger group.
5. Decision Making — Can't choose between options? Assign them numbers and let the generator decide. Or use Coin Flip for a simple heads/tails.