Probability Calculator

To get the result, fill out the calculator form and press the Calculate button.

What is the Probability?

Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true

The probability of an event is a number between 0 and 1, where, roughly speaking, 0 indicates impossibility of the event and 1 indicates certainty

Probability formula

P(E) = n(E)/n(S)

  • n(E) Number of event favourable to event E
  • n(S) Total number of outcomes

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