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Probability
Calculator

Calculate single event probability, combined event probability, and conditional probability with instant results.

Single Event

Favorable outcomes

Total outcomes

Probability

0.1667

Percentage

16.6667%

Odds

1 to 5

Combined Events

Assumes independent events

P(A)

P(B)

P(A and B)

0.15

P(A or B)

0.65

P(not A)

0.5

P(not B)

0.7

Conditional Probability

P(A | B) = P(A and B) / P(B)

P(A and B)

P(B)

P(A | B)

0.5