Average Percentage Calculator
Each percentage can carry a weight. Give a bigger weight to the percentage that covers more people, more points or more money, and it pulls the average closer to its own value.
- Free
- Works offline after your first visit
- Saves on this device
- No sign-up
- Updated
How it works
Multiply each percentage by its weight, add those up, and divide by the total of the weights. Equal weights give a simple average of the percentages.
A percentage is a share of its own group, so averaging percentages makes most sense when the groups are about the same size, or when you weight each one by its size.
Worked example
Your four percentages, weighted as entered, average to 75 percent.
Questions
Why not just add the percentages and divide?
That works when every percentage has the same weight. If one covers more people or more points, a plain average gives it too little say.
Do the weights have to be whole numbers?
No. Any positive numbers work, and only their proportions matter.
What if I have only two percentages?
Set the other weights to 0. Those entries then drop out of the average.
More like this
- Average CalculatorMean of a list of numbers.
- Weighted Average CalculatorAverage where some values count more.
- Percentage CalculatorA percent of a number, or one number as a percent of another.
- Percent Change CalculatorPercent up or down between two numbers.
- Percent Difference CalculatorGap between two values, as a share of their average.
- Standard Deviation CalculatorSpread of a list of numbers.