Free Dice Probability Calculator
A dice probability calculator shows the odds of rolling a target total, exact number, threshold, or pair from a selected dice pool. Use it to compare board game odds, DND checks, classroom probability examples, and custom roll modifiers.
Built for tabletop odds and quick rules checks
Compare common dice pools, copy the odds, and use the chart to explain why some totals appear more often than others.
Find board games with GameShelfDice odds calculator
Chance
16.67%
1 in 6
Favorable rolls
6
of 36 outcomes
Any pair
16.67%
1 in 6
Total distribution for 2d6
Frequently asked questions
What is a dice probability calculator?
A dice probability calculator shows the chance of rolling a target total, exact number, threshold, or pair for a selected dice pool.
How do you calculate dice roll probability?
List every possible dice outcome, count the outcomes that match the target, then divide matching outcomes by total outcomes.
What is the most likely roll on 2d6?
The most likely 2d6 total is 7 because six combinations make 7, more than any other total on two six-sided dice.
Can I include modifiers in dice odds?
Yes. Add a positive or negative modifier and the calculator applies it to every total before checking the target.
Does this work for DND and board games?
Yes. The calculator works for d4, d6, d8, d10, d12, d20, d100, and multi-dice pools used in tabletop RPGs and board games.