# Weighted Average Calculator

> Calculate a weighted mean — for grades, ratings and portfolio returns.

To calculate a weighted average, enter your values and their matching weights, one per line. Weights are normalised automatically, so you can use raw figures such as credit hours or share counts without converting them to percentages first.

**URL:** https://convertto.tech/t/weighted-average-calculator
**Category:** Calculators (https://convertto.tech/c/calculators)
**Privacy:** Runs entirely in the browser; no upload
**Cost:** Free, no sign-up
**Last updated:** 2026-08-01

## Key facts

- **Privacy:** Runs entirely in your browser — nothing is uploaded
- **Cost:** Free, unlimited, no sign-up

## How to use

1. Enter or paste your values (one per line).
2. Enter or paste your weights (one per line).
3. The result appears immediately — copy or download it.

## FAQ

### When is a weighted average the right measure?

Whenever the values represent different amounts. A plain average of two exam scores treats a 10% quiz and a 60% final equally; a weighted average reflects what each is actually worth.

### Must the weights add to 100?

No. Any positive numbers work, because the calculation divides by their total. Weights of 1, 2 and 3 give exactly the same result as 16.7%, 33.3% and 50%.

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