Generate unique random numbers
Common uses
Generate unique random numbers for raffles, lotteries, classroom games, testing, datasets and simple decision making without duplicates.
Why use this tool
This page is designed to solve one clear task quickly, which makes it useful for both search visitors and repeat users.
Is this tool free?
Yes. You can use it without creating an account.
Does it work on mobile?
Yes. The interface is built mobile-first and scales cleanly on larger screens.
Does the tool send my data to a server?
The calculation or generation runs in your browser for a fast experience.