Math calculator

Percentage Difference Calculator

Compare two values as a percentage of their average magnitude.

Enter your values

Results are calculated in your browser.

How this calculation works

|a − b| ÷ ((|a| + |b|) ÷ 2) × 100 Use the calculator above to enter your values. Inputs are checked before a result is shown, and calculations run locally in your browser.

Example: 100 and 120 have a 18.18% difference Results are rounded for display where needed.

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