Can favorable outcomes be zero?
Yes. Zero favorable outcomes gives a probability of zero percent.
Probability Calculator
Calculate probability, odds, and percentage from favorable and total outcomes.
Calculations happen locally. We do not send your values to our server.
Example
One favorable outcome among six equally likely outcomes gives probability 1/6, or approximately 16.6667%.
Calculation method
For equally likely outcomes, probability equals favorable outcomes divided by total possible outcomes and the percentage is that ratio multiplied by 100.
Important notes
The simple model assumes outcomes are equally likely and mutually distinct; real-world events may not meet those assumptions.
Frequently asked questions
Can probability exceed 100 percent?
No. Favorable outcomes cannot exceed the total possible outcomes.
Does this handle dependent events?
No. It calculates a single favorable-to-total ratio, not conditional or dependent-event probability.