Average Percentage Calculator
Find the average of several percentages, or a weighted average where some count more. Shows the steps.
Average Percentage Calculator
What This Average Percentage Calculator Does
This tool finds the average of a list of percentages. Use a simple average when each percentage covers a same-sized group, or a weighted average when some percentages should count more than others (for example, a final exam worth more than a quiz).
Average Percentage Formula
For a simple average, add the percentages and divide by how many there are:
average = (p1 + p2 + ... + pn) / nFor a weighted average, multiply each percentage by its weight, then divide by the total weight:
weighted average = (p1 x w1 + p2 x w2 + ...) / (w1 + w2 + ...)How to Use It
- Enter your percentages separated by commas.
- For a weighted average, choose “Weighted average” and enter one weight per percentage, in the same order.
- Read the average and the steps below it.
Worked Examples
| Problem | Steps | Answer |
|---|---|---|
| Average of 60%, 75%, 90% | (60 + 75 + 90) / 3 = 225 / 3 | 75% |
| Average of 50% and 100% | (50 + 100) / 2 = 150 / 2 | 75% |
| Average of 80%, 90%, 75% | (80 + 90 + 75) / 3 = 245 / 3 | 81.67% |
| Weighted: 80% (weight 3), 60% (weight 1) | (80 x 3 + 60 x 1) / (3 + 1) = 300 / 4 | 75% |
Common Uses
- Averaging test, quiz, or assignment scores.
- Combining percentages from different sections of a project.
- Working out a weighted grade where some parts count more.
- Averaging survey or rating percentages.
FAQ
How do you average percentages?
Add the percentages together and divide by how many there are. For 60%, 75%, and 90%:
(60 + 75 + 90) / 3 = 75%.
Can you just average percentages directly?
Yes, when each percentage is out of a same-sized group. If the groups are different sizes, use a weighted average so the larger groups count more.
What is a weighted average percentage?
Each percentage is multiplied by its weight, the results are added, and the total is divided
by the sum of the weights. For 80% with weight 3 and 60% with weight 1:
(80 x 3 + 60 x 1) / (3 + 1) = 75%.
Is the result exact?
The math is exact for the numbers you enter. Results are rounded to two decimal places for display.