Random Number Generator
This random number generator creates one or many random integers in any range you choose, with the option to disallow duplicates. It works as a random number picker for draws, a lucky number generator, or a quick test data source, and uses the Web Crypto API for genuinely unpredictable results.
Last updated July 19, 20263 min read
How to generate random numbers
- 1
Set the range
Enter the smallest and largest allowed values.
- 2
Choose how many
Generate a single number or a whole list at once.
- 3
Toggle duplicates
Turn duplicates off for raffles, drawings, and lotteries.
Benefits
- Uses crypto.getRandomValues for true unpredictability.
- Optional unique-only mode for fair drawings.
- Copy the entire result set with one click.
- Runs entirely offline in your browser.
Common uses
- Raffles, giveaways, and drawings
- Randomly picking questions or team members
- Testing and seeding data
- Games and decision-making
Frequently asked questions
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