Generate one or many random numbers within a range.
Is this truly random, or predictable?
It uses your browser's cryptographically secure random number source, and every number in your range is equally likely to come up. That makes it suitable for everyday uses like games and casual drawings.
Can I generate numbers without duplicates?
Yes — turn off duplicates and each number in the result will be unique, useful for things like drawing raffle numbers or unique IDs from a fixed range.
What's the largest range I can use?
Any range of whole numbers works as long as the gap between the minimum and maximum is under about 9 quadrillion (9,007,199,254,740,991), with or without duplicates. You can generate up to 1,000 numbers at a time.