Calculate simple probability, odds, combinations, permutations, and conditional probability with this free probability calculator.
Simple probability:
P(A) = favorable outcomes ÷ total outcomes
Combination:
C(n,r) = n! / (r!(n-r)!)
Permutation:
P(n,r) = n! / (n-r)!
Conditional probability:
P(A|B) = P(A ∩ B) ÷ P(B)
Probability helps measure uncertainty and predict the chance of events. It is used in math, statistics, games, weather, finance, science, and decision-making.
It helps compare risks, outcomes, and expected results in a clear way.
Your result shows the probability or counting outcome based on the selected mode. Supporting values also show percentages, odds, and formulas used.
This makes it easier to understand how likely an event is or how many possible selections or arrangements exist.
Probability is a measure of how likely an event is to happen.
Probability compares favorable outcomes to all outcomes, while odds compare favorable outcomes to unfavorable outcomes.
Conditional probability is the probability of one event happening given that another event has already occurred.
Permutations care about order, while combinations do not.