Random Number Generator
Generate truly random numbers within any range using the browser crypto API — one at a time or in bulk, with optional uniqueness — for draws, testing, sampling and games.
Runs entirely in your browser — nothing is uploaded.
About Random Number Generator
Generate truly random numbers within any range using the browser crypto API — one at a time or in bulk, with optional uniqueness — for draws, testing, sampling and games.
- Uses the cryptographic random API for unbiased, unpredictable numbers.
- Set any min/max range and generate single values or large batches.
- Option to force unique results, ideal for draws and sampling.
Random Number Generator is part of Upwwards Tools, a free collection of browser-based utilities built by the team at Upwwards. Like the rest of the suite, it's free, requires no sign-up, and keeps your data on your device.
Frequently asked questions
What is Random Number Generator?
Generate truly random numbers within any range using the browser crypto API — one at a time or in bulk, with optional uniqueness — for draws, testing, sampling and games.
Is Random Number Generator free to use?
Yes — Random Number Generator is completely free with no sign-up, account or usage limits. It is part of the free Upwwards Tools collection built by Upwwards.
Is my data private when I use Random Number Generator?
Random Number Generator runs entirely in your browser. Everything you enter or upload is processed locally on your device and is never sent to a server, stored or logged.
Do I need to install anything to use Random Number Generator?
No. Random Number Generator works instantly in any modern web browser on desktop or mobile — there is nothing to download or install.