Random Number Generator
How does the generator produce random numbers?
The generator uses the browser-built-in Web Crypto API (crypto.getRandomValues) — designed for cryptographically secure random data, more reliable than traditional mathematical functions.
Is it suitable for official raffles and competitions?
Yes — the generator uses a cryptographic algorithm suitable for fair draws. For legally binding or institutional raffles, consult the relevant authority for any additional requirements.
How many numbers can be generated at once?
Up to 20 numbers can be generated per operation. Use the slider to set the minimum, maximum and desired count.
Are generated numbers saved?
The generator keeps the last 10 results in the current browser session only — no data is saved to any server or outside the browser.
What range of numbers is supported?
Any integer range is supported. The minimum must be less than the maximum. Up to 20 numbers can be generated per click.
Random Number Generator — Common Uses
This generator uses the browser's built-in Math.random() which produces pseudo-random numbers suitable for raffles, games and sampling. Numbers are generated entirely in your browser — nothing is sent to any server.
Practical uses
- Raffle and giveaway winner selection
- Classroom random student picker
- Board game dice replacement
- Random sample selection for surveys
- A/B test group assignment
Is it truly random?
Mathematically it is pseudo-random — generated by an algorithm rather than a physical process. For everyday uses like raffles and games this is perfectly adequate. For cryptographic applications (encryption keys, secure tokens), use a dedicated cryptographically secure RNG and not this tool.