Probability Calculator
Calculate probability for single and multiple events.
Single Event
Calculate P(A) from favorable outcomes and total outcomes.
Multiple Events
Calculate P(A and B), P(A or B) for independent events.
Odds Converter
Convert between probability, odds, and percentage formats.
FAQ
What is probability?
Probability is a number between 0 and 1 that measures the likelihood of an event. P = favorable outcomes / total outcomes.
What is the difference between P(A and B) and P(A or B)?
P(A and B) = P(A) × P(B) for independent events. P(A or B) = P(A) + P(B) - P(A and B).