About Random Number Generator
This random number generator uses a cryptographically secure pseudo-random number algorithm to generate uniformly distributed random integers within a specified range. It supports batch generation, unique numbers, and sorting.
Common Uses
FAQ
Are the numbers truly random?
This tool uses the browser's built-in CSPRNG (Cryptographically Secure Pseudo-Random Number Generator), which is random enough for most applications. True physical randomness requires specialized hardware.
How many numbers can I generate at once?
You can generate up to 100 numbers at once. If duplicates are not allowed, the count cannot exceed the total numbers in the range.
How to use for lottery?
Set minimum to 1, maximum to total participants, count to number of winners, and uncheck "Allow duplicates" to ensure each number appears only once.
Is history saved?
History is only saved on the current page and will be cleared on refresh. Up to 20 recent records are kept.
Great for games and decisions.
Quick random number generation.
Simple but very useful.