May 26, 2026 Dice Probability Calculator What condition are you testing? Exact Sum (Rolling exactly X) At Least (Rolling X or higher) At Most (Rolling X or lower) Number & Type of Dice d4 (4-sided) d6 (Standard 6-sided) d8 (8-sided) d10 (10-sided) d12 (12-sided) d20 (20-sided) d100 (100-sided) Example: 2 and d6 means rolling two standard 6-sided dice. Target Sum The sum total you are trying to roll. Calculate Odds Reset * Computations use exact mathematical BigInt permutations to guarantee zero precision loss, regardless of dice count.