Random Number Generator
Generate random integers, decimals, or picks from a list — with cryptographic option.
How to Use
- Pick range / count.
- Toggle crypto-random if needed.
- Click Generate.
Notes
About the Random Number Generator
Need a hand with everyday maths and number work? The Random Number Generator does the work for you — free, and right here in your browser. Generate random integers, decimals, or picks from a list — with cryptographic option.
How it works
Pick your options and the tool makes the result right away. Do not like it? Make another one — you can do this as many times as you want. When it looks right, copy it into your own project. Everything is made on your device, so it is yours alone.
Want the deeper story? The Knowledge Base explains the ideas behind the tools in more detail.
Frequently Asked Questions
Crypto vs Math.random?
Math.random is fast but not secure. Crypto uses window.crypto.getRandomValues — uniform, non-seeded.
Unique?
Toggle "Unique" to generate without replacement.
How do I use the Random Number Generator?
Just pick your options. The answer shows up right away — there is no button to press. Change anything and it updates by itself.
Is it free? Does it work without internet?
Yes to both. It is free with no sign-up, and once the page has loaded it keeps working even with no internet.
Where does my data go?
Nowhere — every calculation runs on your own device. Nothing you enter is uploaded, logged, or stored.
Common Use Cases
Giveaway
Pick a winner.
Test data
Seed fixtures.
Last updated: