How to generate a random number
Set the minimum and maximum (for example 1 and 100).
Choose how many numbers you need and whether repeats are allowed.
Press Generate. Numbers roll in on flip counters.
Truly uniform
Numbers come from your browser's cryptographic generator with rejection sampling, so every number in the range is exactly equally likely — even for huge ranges. Without repeats, numbers are drawn like tickets from a hat.
Frequently asked questions
Can I generate numbers without duplicates?
Yes. Turn off repeats and every number appears at most once.
Can I use negative numbers or big ranges?
Yes, any whole numbers up to about nine quadrillion.