Shannon Entropy Calculator

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Calculates the entropy (average level of information, surprise, or uncertainty) inherent in a variable's possible outcomes.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Probability of Outcome A, Probability of Outcome B, Probability of Outcome C, and Probability of Outcome D in the units shown.

Step 2

Read Entropy (bits) in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

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Use calculators for algebra, geometry, trigonometry, probability, statistics, averages, z-scores, tests, and graphing tasks.

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