Random Number Generator Cryptographically unbiased draws
Draw unique or repeated numbers inside any range, choose how many you need, and sort the results ascending or descending.
About Random Number Generator
Set the bounds, choose how many values you want, and draw. Numbers come from the browser's cryptographic random source with rejection sampling, so the distribution is unbiased — no modulo bias, no seeded sequence repeating every time you reload. Tick "unique" to sample without replacement: the draw then refuses duplicates and warns you if you ask for more values than the range can supply.
Typical uses are raffles and giveaways, picking seat numbers, splitting a list, creating test fixtures for a spreadsheet, or choosing lottery numbers where a fair spread matters. The summary row underneath reports the sum, average, lowest, highest and spread of the current draw, which is handy when you are checking whether a batch looks reasonable. Results are not stored — copy them before drawing again.
- 100% free, no signup required
- Works entirely in your browser
- Your data never leaves your device
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