Random number generator: 1 to 13
Draw one or many integers from 1–13—free, no signup, with optional unique picks and exclusions.
Odds for 1–13
There are 13 possible integers from 1 to 13. Any single draw is equally likely: 1 in 13. Drawing the same number twice in a row (with replacement) is 1 in 169.
Use unique picks when you need sampling without replacement, and exclusions to remove values already taken. For giveaway process tips, see how to run a fair online raffle.