How to use the Probability Calculator
- Enter the number of favorable outcomes.
- Enter the total number of possible outcomes.
- Select Calculate to see probability, percent chance, and odds.
Chance
Probability Calculator
Calculate probability as a decimal, percentage, and odds from favorable and total outcomes.
The probability calculator is useful for basic statistics, classroom examples, game odds, risk checks, and simple chance comparisons.
Browse all calculatorsProbability Calculator FAQs
What inputs do I need for probability?
You need the number of favorable outcomes and the total number of possible outcomes.
Does this show odds too?
Yes. The result includes probability as a decimal, percentage, and odds.