D100 Percentile Dice Roller
Roll a percentile die, a number from 1 to 100.
Quick answer: Press Roll to get a number from 1 to 100. Each number has a 1 in 100 chance, so rolling 50 or less is a 50% chance.
How to use it
- Choose one, two or three dice and the number of sides.
- Press Roll the dice. The dice fall, bounce and land in a different place and angle every time.
- The numbers are added up under the dice.
What people use it for
- Board games when the dice are lost
- Tabletop role-playing games
- Teaching probability
- Quick random choices
- Games with children
Percentile dice are used for roll-under checks and random tables in many role-playing games. Physical sets use two ten-sided dice, one for tens and one for ones. This roller picks the whole number directly, so each of the 100 results is equally likely.
Questions
What are the odds of rolling 1 to 10 on a d100?
10%.
What are the odds of a 100?
1 in 100, or 1%.
Are the dice fair?
Yes. Each side has the same chance on every roll, and the result is chosen before the dice tumble, using your browser's secure random generator.
Do the dice remember earlier rolls?
No. Every roll is independent, so a streak of the same number does not make it less likely next time.
Is it really random?
Yes. It uses your browser's secure random number generator, the same kind used for security. Each outcome is equally likely, and earlier results do not affect the next one.
Is anything saved or sent?
No. Names and results stay in your browser and are gone when you close the page.
Is it free?
Yes. No sign-up, no limit.