Free online tool
Random Number Generator
Generate random integers in any range, with or without duplicates. Cryptographically random and 100% offline.
When you need a random number
Random numbers show up everywhere: picking a raffle winner, choosing a test sample, seeding a game, deciding a coin flip, or just settling a small argument fairly. This generator gives you full control over the range, count and whether repeats are allowed — no more scribbling on paper or trusting an app you don't know.
Is it truly random?
The generator uses the browser's crypto.getRandomValues, which is a cryptographically secure pseudo-random number generator. For everyday purposes — draws, sampling, testing — the output is statistically indistinguishable from true randomness and vastly better than the default Math.random.
+Can I use this for a public giveaway?
Yes. Take a screenshot of your inputs and the generated numbers as a record. For high-stakes draws, consider using a verifiable random source that participants can audit.
+Why is there a limit of 1000 numbers?
That's just a UI cap to keep things snappy. If you need larger batches, contact us and we can raise it.
Why use the Random Number Generator on ToolNest?
The Random Number Generator is one of more than forty free browser-based utilities we maintain on ToolNest. Every tool on the site is engineered around the same three promises: it must be fast, it must protect your privacy, and it must be genuinely useful without hiding features behind an account, a paywall, or an email capture form. Whether you use the Random Number Generatoronce a month or several times a day, it should feel like a native part of your workflow — open the tab, get the result, move on.
Everything happens directly inside your web browser. When you type, paste, or upload something into the Random Number Generator, that data never leaves your device. There is no server round-trip, no logging, no analytics pixel watching your keystrokes, and no third-party API silently receiving a copy of your input. Closing the browser tab is the same as clearing your session. This is a deliberate design choice: too many free "online tools" quietly funnel user content through remote servers, and we do not think a utility as small as this one justifies that risk.
Speed is the other pillar. The Random Number Generator loads on a cold connection in well under a second and stays responsive on older phones, low-power laptops, and metered mobile networks. There are no heavy frameworks layered on top of the tool, no autoplay video ads, and no blocking third-party scripts. Search engines like Google reward pages that load quickly and stay interactive, but more importantly, so do human visitors who came here to get one specific job done.
If the Random Number Generator saves you time, the best thing you can do is bookmark this page and share it with a colleague or classmate who might need it. We also welcome direct feedback — bug reports, feature requests, and suggestions for entirely new tools all go to the same inbox and are read by a human. The best tools on ToolNest started life as a one-line reader email, and this page will keep improving as long as people keep telling us what they wish it did better.