Dice Roller & Probability
Roll any number of fair dice (d4, d6, d8, d10, d12, d20, d100), with the exact chance of every total.
About the Dice Roller & Probability
Rolls use your browser's cryptographically secure random generator, so every face is equally likely. The chart shows the exact probability of each total, worked out by adding up every combination of faces.
The formula
Average total = n × (s + 1) ÷ 2
- n
- number of dice
- s
- sides per die
Worked example
2d6
- Most likely total: 7 (6 of 36 ways = 16.67%)
- Least likely: 2 or 12 (1 in 36)
Questions people ask
Why is 7 the most common total with two dice?
More face pairs add to 7 (1+6, 2+5, 3+4 and reverses) than any other number.
Are the rolls fair?
Yes. Values that would bias the result are discarded and redrawn.