Bayes' Theorem Calculator

Bayes' Theorem Calculator

Prior Probability (P(A)):

True Positive Rate (P(B|A)):

False Positive Rate (P(B|¬A)):

Result:

The updated probability (P(A|B)) is:

About Bayes' Theorem

Bayes' Theorem describes the probability of an event based on prior knowledge of conditions related to the event.

Formula: P(A|B) = [P(B|A) × P(A)] ÷ [P(B|A) × P(A) + P(B|¬A) × P(¬A)]