Random Number Generator
Generate cryptographically strong pseudorandom integers between any range. Single picks, number lists, lottery numbers — all free, all instant.
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About This Tool
What it does
Generates random numbers between any range. Includes lottery number picker, dice roll simulator and custom list generation.
Who it's for
Anyone needing random numbers for games, lotteries, statistical sampling, classroom activities or decision making.
Your privacy
All generation happens in your browser using JavaScript. No data is transmitted or stored.
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Method, limits and privacy
Inputs must be safe whole integers. Sampling is inclusive and uses the browser Web Crypto API with rejection sampling; unique mode samples without replacement. Sorting changes presentation only, not the draw.
Sources reviewed 23 June 2026: Web Crypto API
Frequently Asked Questions
Are the generated integers unbiased?
The tool uses crypto.getRandomValues with rejection sampling, so each integer in the inclusive minimum-to-maximum range has equal intended probability.
Are the minimum and maximum included?
Yes. Both endpoints are eligible. If the minimum equals the maximum, that single value is returned.
When can I request unique numbers?
Unique mode works only when the requested quantity does not exceed the number of integers in the inclusive range.
Can I use this for regulated draws?
No. It is a browser-based pseudorandom utility and is not an independently audited lottery or regulated gaming system.
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