Probability Calculator

Calculate single event probability, combined probability (AND/OR), and convert between different odds formats.

Single Event Probability

Calculate the probability of a single event occurring based on favorable outcomes and total outcomes.

Favorable Outcomes

Total Outcomes

Formulas

Probability:

P(A) = Favorable Outcomes / Total Outcomes

Percentage:

P(A) x 100%

About Probability Calculator

Probability calculator provides single event probability, combined probability (AND/OR), and conversion between different odds formats. All calculations are done in your browser.