The Conditional Probability Calculator helps determine the likelihood of one event occurring given that another event has already occurred. By entering the joint probability of both events P(A∩B)P(A ∩ B)P(A∩B) and the probability of event B P(B)P(B)P(B), the calculator computes P(A∣B)=P(A∩B)P(B)P(A|B) = \frac{P(A ∩ B)}{P(B)}P(A∣B)=P(B)P(A∩B)​. This is useful in probability, data science, and statistics when events are dependent, helping to measure how the occurrence of one event affects the probability of another.