Online Dice Roller
Lost your dice? Roll up to 20 virtual dice with 4 to 100 sides. Perfect for board games, Ludo, D&D and maths class.
Press Roll to throw the dice.
By Shah Rukh, software developer · Last updated:
Dice probabilities
With one fair die, every face is equally likely: 1 in 6 for a d6, 1 in 20 for a d20. With two dice, totals in the middle are more common:
| Two-dice total | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Ways to roll | 1 | 2 | 3 | 4 | 5 | 6 | 5 | 4 | 3 | 2 | 1 |
7 is the most likely total (6 of 36 combinations, about 16.7%).
Dice in tabletop games
Dungeons & Dragons uses a set of seven dice: d4, d6, d8, d10, d12, d20 and a percentile d100. In D&D notation, “2d6” means roll two six-sided dice and add them up.
Frequently asked questions
Is the dice roller random?
Yes. It uses a cryptographically secure random generator, so every face has exactly equal odds.
How many dice can I roll?
Up to 20 at once, and the total is added up for you.
What does d20 mean?
A 20-sided die. The number after “d” is the number of sides.
Related tools
Spin the Wheel
Random name picker wheel for giveaways and classrooms.
Flip a Coin
Heads or tails? Flip a fair coin online.
Random Number Generator
Random numbers in any range, with no repeats.
Yes or No Wheel
Can’t decide? Spin for a yes or no answer.
Typing Speed Test
Test your typing speed in WPM and accuracy.
Reaction Time Test
How fast are your reflexes? Click on green.