Weighted Average & GPA Calculator (Free)

Use this free weighted average calculator to combine values that don’t count equally. Enter each value with its weight and you’ll get the weighted mean — or flip on GPA mode to turn letter grades and credit hours into a grade point average.

How to use the calculator

1. Enter each value and its weight, one pair per line.
2. Or switch to GPA mode and enter letter grades with credit hours.
3. Read the weighted average, the total weight, and the steps.

How a weighted average works

A weighted average multiplies each value by its weight, adds those products, and divides by the total weight: Σ(value × weight) / Σ(weight). Values with larger weights pull the average toward them.

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Frequently asked questions

How do you calculate a weighted average?

Multiply each value by its weight, add the results, and divide by the sum of the weights: Σ(value×weight)/Σ(weight).

How is GPA calculated?

Convert each letter grade to grade points (A = 4, B = 3, …), weight by credit hours, and divide by total credits.

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How is it different from a simple average?

A simple average treats every value equally; a weighted average lets some values count more, based on their weights.

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Read the full lesson: learn the method step by step.

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