Random numbers
Whole numbers in any range you like, unique or repeating, one at a time or in batches.
Options
| Option | What it does |
|---|---|
| Range | Any lower and upper bound up to a billion |
| How many | 1 to 1000 values in one go |
| Unique | No value repeats within a batch |
| Sorted | Ascending output instead of draw order |
Where the randomness comes from
The browser's cryptographic generator, the same one used for session keys — not a seeded pseudo-random sequence you could replay. Reloading the page does not repeat the previous batch.
If you need reproducible numbers for a simulation, you want a seeded generator
instead. This page deliberately does not offer one: reproducible and random pull in opposite directions.