Dice Probability Calculator – Find Your Odds with Every Roll

Whether you’re a student learning probability, a tabletop gamer rolling for stats, or just curious about dice outcomes — our Dice Probability Calculator is here to help.

This easy tool lets you calculate the chances of different dice rolls in seconds. Just enter how many dice you’re rolling, how many sides they have (like 6-sided, 8-sided, etc.), and what outcome you want to know. You’ll instantly get the probability as a fraction, decimal, and percentage.

How to Use the Dice Probability Calculator

Using our calculator is simple and beginner-friendly:

1. Enter Number of Dice – For example, 2 dice or 3 dice.
2. Enter Number of Sides per Die – Common ones are:
   • 6-sided dice (D6)
   • 8-sided dice (D8)
   • 10-sided, 12-sided, or even 20-sided dice for DnD players
3. Enter the Target Sum or Value – Like the number 7 or rolling a 6.
4. Choose Type of Probability:
   • Exact sum (e.g., sum = 8)
   • At least one die shows a specific number
   • Doubles (for 2 dice)
   • Triples (for 3 dice)

Click “Calculate” and your result will appear instantly.

Real-World Examples

Rolling Two Dice – What’s the Probability of Getting a 7?

• Total outcomes: 36
• Successful outcomes: 6 (like 1+6, 2+5, 3+4, etc.)
• Answer: 6/36 = 1/6 = 0.1667 or 16.67%

2 Dice Probability Calculator

Use this for rolling two fair dice and calculating:

• Probability of sum = 9
• Getting doubles (like two 4s)
• Odds of not getting doubles

Dice Probability Calculator With Rerolls

Want to know the odds if you reroll all non-6s? Our calculator doesn’t directly simulate rerolls, but you can adjust the dice count or run multiple simulations using “at least one” logic.

DnD Dice Probability Calculator

If you’re a Dungeons & Dragons player using:

• 6-sided dice (D6)
• 8-sided dice (D8)
• 20-sided dice (D20)

Our calculator helps you figure out chances like:

• Rolling a 15 or higher on a D20
• Getting 3 of the same number on 3 D6s (triples)
• Probability of at least one success in multiple rolls

Dice Probability Chart & Table (Quick Guide)

2 Dice Probability Chart (6-sided)

Other Dice Types You Can Use

• 3 Dice Probability Calculator – Total combinations = 6 × 6 × 6 = 216
• 5 Dice Probability Calculator – Great for Yahtzee-style games
• 6 Dice Probability Calculator – Use for custom board games
• One Dice Probability Calculator – Simple 1-in-6 odds for 6-sided die
• 8-Sided Dice Probability Calculator – Used in RPGs like Genesys or World of Darkness

Common Questions & Answers

How do you calculate dice probability?

Use the formula:
Probability = (Favorable Outcomes) ÷ (Total Possible Outcomes)
Example: Probability of rolling a 6 on one die = 1/6 = 16.67%

What is the probability of rolling doubles with two dice?

There are 6 ways to roll doubles out of 36 total outcomes:
6/36 = 1/6 = 16.67%

What is the probability of rolling a 7 with two dice?

There are 6 ways to roll a 7 (1+6, 2+5, etc.):
6/36 = 1/6 = 16.67%

What is the probability of rolling a 3 on a 6-sided die?

Only 1 face out of 6 is a 3:
1/6 = 16.67%

If you roll two fair dice, what is the probability of both being odd?

Each die has 3 odd numbers: 1, 3, 5.
(3/6) × (3/6) = 1/4 = 25%

Coin and Dice Probability Calculator?

Flip a coin (2 outcomes), roll a die (6 outcomes):
Total = 2 × 6 = 12 outcomes
Probability of getting heads and rolling a 6 = 1/12 ≈ 8.33%

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Conclusion

Dice probability is a simple but powerful concept. Whether you’re calculating chances in a game, solving math problems, or just having fun with numbers, our tool is your go-to companion.

Disclaimer

This tool gives theoretical probabilities based on fair dice. It doesn’t predict actual outcomes, which can vary due to chance.