Probability Calculator

Calculate simple, compound, and conditional probabilities.

Probability Calculator

Calculate simple, compound, and conditional probabilities.

Simple Probability: P(Event) = Favorable Outcomes / Total Possible Outcomes

Compound Probability: For independent events A and B:

  • P(A and B) = P(A) × P(B)
  • P(A or B) = P(A) + P(B) - P(A and B)

Conditional Probability: P(A|B) = P(A and B) / P(B)