Dice Probability Calculator

Summary

Select your dice type and count, then instantly see the probability of rolling any target sum or range.

How it works

1. Choose the dice type (d4, d6, d8, d10, d12, or d20) from the dropdown.
2. Set the number of dice to roll (1 to 10).
3. Enter a target sum, a minimum value, or a maximum value to filter by.
4. The calculator enumerates all possible outcomes and computes exact probabilities.
5. View the full probability distribution chart to see the bell curve for your dice set.

Use cases

• Calculate the odds of rolling a critical hit in Dungeons and Dragons.
• Determine the chance of a specific total in tabletop RPG combat.
• Analyze board game dice fairness and outcome distributions.
• Teach students probability concepts with tangible, relatable examples.
• Compare attack strategies by evaluating probability of success.
• Find the most likely roll total for any dice combination.
• Verify whether a game mechanic is balanced before publishing.
• Plan risk-based decisions in wargames or strategy board games.

Frequently Asked Questions