What is the Weighted Average Calculator?
The weighted average calculator is a free online tool that helps you work out weighted average quickly and accurately. It uses the standard formula Weighted average = sum(value x weight) / sum(weight) and shows the result instantly as you type, along with a full breakdown so you can see exactly how the answer was reached.
How to use this calculator
- Enter values.
- Enter matching weights.
- See the weighted average.
Formula used
Weighted average = sum(value x weight) / sum(weight)Explanation of each input
- Values (comma separated) โ the values (comma separated) used in the calculation.
- Weights (comma separated) โ the weights (comma separated) used in the calculation.
Understanding your result
- Weighted average โ the calculated weighted average.
Step-by-step calculation
For the example values 80,90,70 weighted 2,3,1:
- Apply the formula:
Weighted average = sum(value x weight) / sum(weight) - Substitute the values: (160+270+70)/6
- Result: about 83.33
Worked example
| Inputs | 80,90,70 weighted 2,3,1 |
|---|---|
| Working | (160+270+70)/6 |
| Result | about 83.33 |
Benefits and practical uses
This calculator saves you time and reduces errors when you need weighted average. It is useful for students, professionals and anyone who wants a fast, reliable answer without manual calculation. Results update instantly, work in your browser and can be copied or shared in one click.
Assumptions and limitations
- Equal count of values and weights.
Frequently asked questions
When do I use a weighted average?
When some values count more than others, such as grades by credit hours.
Disclaimer: Results are provided for general information. Please verify important figures independently.