Conditional probability calculator

Calculate conditional probability with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use conditional probability to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Joint probability
0.2
Condition probability
0.5
Conditional probability
0.4

Try another scenario

Joint probability
0.22000000000000003
Condition probability
0.5
Conditional probability
0.44
Calculation method

Calculation method

Conditional probability

a ÷ b

Symbols and units
a
Joint probability
b
Condition probability

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • P(A given B) = P(A and B) / P(B).
Are these inputs private?

These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.

Further reading

Method reference ↗

Background reading; this does not imply endorsement or independent review of SumFizz.

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