Random Number Generator
Generate random numbers within any range, with an option for unique results.
Frequently Asked Questions
How random are the numbers?
Numbers are generated using your browser Math.random, which is a fast pseudo-random generator. It is fine for games, samples, and casual use, but not for cryptography.
What does "no duplicates" do?
When enabled, every generated number is unique within the result set. If you ask for more unique numbers than the range allows, the tool tells you it is not possible.
Is there a limit on how many I generate?
You can generate up to 1000 numbers at a time for performance. For unique numbers, the count cannot exceed the size of the range.
Is my data sent anywhere?
No. Generation happens in your browser. Nothing leaves your device.
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