Generate a random whole number from 0 to 9, for picking a single digit.
Press Generate for a random number between 0 and 9. Both ends are included and each of the 10 numbers has exactly a 1 in 10 chance.
Odds for numbers between 0 and 9
Possible numbers
10
Chance of any one number
1 in 10 (10.0%)
Chance of repeating the last number
1 in 10
Chance a given number appears at least once in 10 picks
65.1%
Average result over many picks
4.5
Even / odd numbers
5 even, 5 odd
The last-but-one row surprises many people: even with 10 picks, a particular number has a 34.9% chance of never coming up, because picks are independent.
What a 0–9 range is used for
A random number between 0 and 9 is handy for picking a single digit.
What are the odds of getting a specific number between 0 and 9?
Each number has a 1 in 10 chance (10.0%) on every pick.
Can the same number come up twice in a row?
Yes, if repeats are allowed: the chance of repeating the previous number is 1 in 10. Tick "No repeats" when picking several numbers to get all-different results.
Are 0 and 9 included?
Yes. Both ends are included, so there are 10 possible numbers.