Free online tool
Bulk Random Number Generator
Generate large batches of random numbers with custom ranges, no-duplicate mode, sorting, and CSV, JSON, or TXT export.
Generated output runs in your browser. Where available, the tool uses Web Crypto; it does not use a physical true-random source and does not intentionally store generated results on our server.
How to use
- Choose a range and quantity.
- Use no-duplicate mode only when the range can support it.
- Pick sorting and an output separator.
- Export large batches as CSV, JSON, or TXT.
Examples and use cases
Built for QA data, classroom worksheets, simulations, sampling, and lottery-style practice draws that are not legal compliance systems.
For official lotteries, giveaways, or compliance-sensitive draws, use an approved process.
FAQ
How large can a batch be?
The page is intended for practical browser-sized batches, up to the quantity control shown.
Can I use comma-separated output?
Yes. Choose comma, semicolon, space, or new line as the output separator.
Does no-duplicate mode always work?
Only when the selected range contains enough unique values.
Is this stored on the server?
No generated number batch is intentionally stored by this static site.
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