Calculator

Probability Calculator

Calculate odds, probabilities, and expected values. Understand the math behind games of chance.

Probability concepts

  • Probability — The chance of an event occurring (0 to 1, or 0% to 100%)
  • Odds — Ratio of favorable to unfavorable outcomes
  • Combination — Number of ways to choose items from a set
  • Expected value — Average outcome over many trials
  • Dice math — Probability of rolling specific totals
An unhandled error has occurred. Reload 🗙