Utility ToolsFree
Random Number Generator
Generate cryptographically secure random numbers in any range. Set minimum and maximum values, choose how many numbers to generate, allow or prevent duplicates, and sort the output. Uses the Web Crypto API for true randomness. No signup required.
Updated June 2026
- 1Set the range
- 2Generate
- 3Get your random number
How to use Random Number Generator
- 1
Set the range
Enter the minimum and maximum values.
- 2
Generate
Click 'Generate' to produce a random number in that range.
- 3
Get your random number
Generate again for a fresh result any time.
Frequently asked questions
Everything you need to know about random number generator.
Yes. Numbers are generated using the Web Crypto API's crypto.getRandomValues(), which provides cryptographically secure randomness suitable for security applications, not just statistical randomness.
Yes. Set the count to any number up to 1,000. The output can be sorted in ascending or descending order.
Yes. Toggle 'allow duplicates' on or off. When off, each generated number is unique within the range.
Statistical sampling, lottery number selection, random password seeds, game mechanics, random assignment in research, and any application requiring unbiased number selection.
Any range within JavaScript's safe integer limits — from -9,007,199,254,740,991 to 9,007,199,254,740,991.
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