Simple average
Add all percentages and divide by the total number of percentages.
Percentage Calculator
How to Calculate Average Percentage
Calculate a simple average percentage, weighted average, or overall percentage from totals using the correct method for your data.
Instant results
3 calculation methods
Free to use
Average Percentage Calculator
Choose the right method, enter your values, and get a complete calculation breakdown.
Enter your values
Select the calculation method that matches your percentages.
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Choose the Right Method
Three ways to calculate average percentage
The correct method depends on whether each percentage has equal importance and whether the percentages come from equal totals.
Weighted average
Multiply each percentage by its weight, add the results, and divide by total weight.
Overall percentage
Combine the achieved values and possible totals before calculating the final percentage.
How It Works
How to calculate average percentage
Follow these steps to calculate your percentage average correctly.
Check your values
Decide whether the percentages should have equal or different importance.
Select a method
Choose simple average, weighted average, or overall percentage.
Enter your data
Add the percentages, weights, or combined totals required for your calculation.
Review the answer
See your final percentage and the exact calculation used to produce it.
Formulas
Average percentage formulas
Use the formula that best matches the way your percentages were originally calculated.
How the calculation works
A simple average works when all percentages have equal importance. Add the percentages and divide by the number of values.
A weighted average is better when one result counts more than another, such as exams and assignments with different grade weights.
When percentages come from different total amounts, combine the original totals instead of averaging the percentages directly.
Core formulas
Simple Average = Sum of Percentages ÷ Number
of Percentages
Weighted Average = Σ(Percentage × Weight) ÷
Σ(Weights)
Overall Percentage = (Total Achieved ÷ Total
Possible) × 100
Examples
Average percentage examples
These examples show how each method works in real situations.
Three equal scores
Three equally important percentages are 70%, 80%, and 90%.
(70 + 80 + 90) ÷ 3 = 80%
Coursework and exam
Coursework is 75% with a weight of 40, while the exam is 85% with a weight of 60.
(75 × 40 + 85 × 60) ÷ 100 = 81%
Different point totals
One result is 8 out of 10 and another is 60 out of 100.
(8 + 60) ÷ (10 + 100) × 100 = 61.82%
Do not blindly average percentages from different totals
For example, averaging 80% from 8/10 and 60% from 60/100 gives 70%, but this treats both results as equally large. Combining the original totals gives 68/110, or 61.82%.
FAQs
Frequently asked questions
Common questions about how to calculate average percentage correctly.
Add the percentages together and divide by the number of percentages when all values are equally important.
No. Use a weighted average when percentages have different importance. Use combined totals when percentages come from different denominators.
A weighted average gives more influence to percentages with larger weights. Multiply each percentage by its weight, add the results, and divide by total weight.
Add all points earned, add all points possible, divide the earned total by the possible total, and multiply by 100.
Yes. This can happen with growth rates, target performance, or any percentage value that can naturally exceed 100%.
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