Weighted Average Calculator
Write the value and its weight on each line, separated by a comma — see the weighted average, sum of weights, sum of values and the simple average for comparison, with intermediate values.
How to use
- Write the value first, then its weight, on each line. Example: Maths 80 marks with weight (credit hours) 3 means the line: 80, 3.
- The result shows the sum of weights, sum of (value x weight) and the weighted average.
Note: Formula: Weighted average = sum(value x weight) / sum(weights). If a weight is zero, that value is not included in the calculation. If all weights are equal, the weighted average is the same as the simple average.
Frequently Asked Questions (FAQ)
How do I enter my values?
Write the value first, then its weight, on each line. Example: 80, 3 means 80 marks with weight (credit hours) 3.
What results appear?
The sum of weights, the sum of (value x weight), the weighted average, and the simple average for comparison.
What formula is used?
Weighted average = sum(value x weight) / sum(weights). A zero weight excludes that value.
What happens if I give a value a weight of zero?
That value is excluded from the average, since it adds nothing to the total weight.