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Probability Calculator

Chance of outcomes, dice rolls, or exact binomial successes — shown as percent and odds.

Scenario
Outcomes
Probability
30%
3 of 10 outcomes
As a decimal0.3
Odds for0.3 : 0.7
Complement (not happening)70%

About the Probability Calculator

Chance of outcomes, dice rolls, or exact binomial successes — shown as percent and odds.

It runs entirely in your browser — nothing you type is sent to a server — and the result updates as you edit the inputs. Estimates are for educational and informational purposes only; see ourdisclaimer.

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