Dice Probability Calculator – Roll Odds & Statistics

Free dice probability calculator for 2, 3, 4 dice rolls. Calculate dice roll odds, sum probabilities, and RPG dice statistics. Includes 2D6, d20, and average dice roll tools.

Dice Probability Calculator

Calculate dice roll odds, probabilities, and statistics instantly

2 Dice • 3 Dice • 4 Dice • Average Roll • RPG • Star Wars Legion

2 Dice Roll Probability Calculator

Calculate the probability of getting a specific sum when rolling two 6-sided dice.

Two Dice Probability Table

SumProbabilityPercentage
21/362.78%
32/365.56%
43/368.33%
54/3611.11%
65/3613.89%
76/3616.67% ⭐ Most Likely
85/3613.89%
94/3611.11%
103/368.33%
112/365.56%
121/362.78%

📚 How It Works

Formula: P(A) = Favorable Outcomes / Total Outcomes

Total possible outcomes when rolling 2 dice: 6 × 6 = 36

❓ Frequently Asked Questions

What is the probability formula?

P(A) = (Favorable Outcomes) / (Total Possible Outcomes). For example, rolling a 6 on one die: P(6) = 1/6 ≈ 16.67%

What is the most likely sum with two dice?

The sum of 7 has the highest probability (6/36 or 16.67%) with two standard dice. This is because there are 6 ways to roll a 7: (1,6), (2,5), (3,4), (4,3), (5,2), (6,1).

How many total outcomes are possible?

Multiply the number of sides on each die. For 2 dice: 6×6=36 outcomes. For 3 dice: 6×6×6=216 outcomes. For 4 dice: 6×6×6×6=1,296 outcomes.

What is average dice roll?

Use the formula: Average = ((Max Value + 1) / 2) × Number of Dice. For one d6: (6+1)/2 = 3.5. For two d6: 3.5 × 2 = 7.

What are standard dice used for?

Dice are primarily used for tabletop games (D&D, Warhammer, Catan), role-playing games, probability simulations, and decision-making in games of chance.