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Math Calculators

Average Percentage Calculator

Calculate the simple average or weighted average of a list of percentages.

Enter each percentage value, separated by commas or spaces.
Leave blank for a simple average. Otherwise enter one weight per percentage, in the same order.
Simple average —
Weighted average —
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About the Average Percentage Calculator

Averaging percentages incorrectly is a common mistake — a simple average treats every percentage equally, while a weighted average accounts for the sample size or importance behind each one.

Formula: Simple Average = (Sum of percentages) ÷ (Count) · Weighted Average = (Sum of percent × weight) ÷ (Sum of weights)

Use the weighted average whenever the percentages come from groups of different sizes, such as pass rates from classes with different numbers of students.

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