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Probability calculator

This calculator computes probability of selected event based on probability of other events. The calculator generates solution with detailed explanation.

Probability Calculator
For dependent events enter 3 values. For independent events input 2 values.
show help ↓↓ examples ↓↓
I want to calculate:
Input values you know
P( A )
=
P( B )
=
P( A and B )
=
P( A or B )
=
P( A | B )
=
P( B | A )
=
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examples
example 1:ex 1:

A single card is chosen from a deck of 52 playing cards. What is the probability of choosing an ace or a heart?

example 2:ex 2:

A fair six sided die is rolled. What is the probability of rolling a number divisible by 3 or an even number?

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