Reserved ad space · responsive display
Inputs
Calculate event probability, odds and complementary chance.
Result
Result
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How to use this tool
Enter the number of favorable outcomes and the total number of equally likely possible outcomes. The calculator reports probability as a percentage and decimal, the complementary probability, and odds in favor. The assumption that outcomes are equally likely is essential: a simple count is not sufficient for weighted events or situations where outcomes have different probabilities.
Reserved ad space · content placement