Random number generator
Generate cryptographically-strong random numbers within a range, with or without duplicates.
How to use
Random number generator lets you generate cryptographically-strong random numbers within a range, with or without duplicates. Set the options and click generate — copy or download the output in one click.
Output is generated locally in your browser and never stored or transmitted. It's completely free, with no sign-up, no watermarks and no limits on how often you use it.
Examples
Tweak the settings and regenerate as many times as you like until you get exactly what you need.
Once random number generator shows your output, use the copy or download button to grab it — no retyping.
Frequently asked questions
Is Random number generator free to use?
Yes. Random number generator is completely free with no sign-up, no watermarks and no usage limits.
Is my data private?
Yes. Output is generated locally in your browser and never stored or transmitted.
Does Random number generator work on mobile?
Yes. It works in any modern browser on desktop, tablet or phone, and keeps working offline once the page has loaded.
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