Random Number Generator
Generate random integers in a configurable range, with options for unique picks, sorting, and bulk counts. Uses the browser cryptographically strong PRNG for fair results. Runs in your browser.
About Random Numbers
Uses the browser's cryptographically strong PRNG (crypto.getRandomValues) for high-quality randomness, suitable for raffles and simulations. For UUIDs use theUUID Generator, and for passwords the Password Generator.
Secure & Private Client-Side
This tool runs entirely in your browser. No data is sent to any server, ensuring your information remains private and secure.
About Random Number Generator
Generate random integers in a configurable range, with options for unique picks, sorting, and bulk counts. Uses the browser cryptographically strong PRNG for fair results. Runs in your browser.
Frequently Asked Questions
How random are the numbers? expand_more
The tool uses crypto.getRandomValues, the browser cryptographically strong pseudo-random number generator. This is suitable for raffles and simulations.
Why does the count drop when I disable duplicates? expand_more
If you disable duplicates, the maximum count equals the size of the range. Asking for more unique numbers than the range allows is impossible.
Is this suitable for lottery draws? expand_more
Yes for casual use. For an official lottery, use a hardware random number generator or a certified draw system.
Need globally unique IDs? expand_more
Use the [UUID Generator](/tools/uuid-generator/) for RFC 4122 version 4 UUIDs.
Is anything uploaded? expand_more
No. All generation runs locally in your browser.
Common Use Cases
- Raffles: Draw fair winners from a numbered ticket pool.
- Sampling: Pick random sample indices for analysis.
- Games: Roll dice or generate lottery-style picks.
- A/B Testing: Assign users to test buckets randomly.