NOTA14 / CALCULATOR

Weighted average

Four components with editable weights.

/10
%
/10
%
/10
%
/10
%
YOUR RESULT

Select Calculate to see your result.

By the editorial team at Nota14 · Reviewed 20 October 2026

How it is calculated

Average = sum(grade × weight) ÷ sum(weights). Weights are normalised; a non-100 total triggers a notice.

A worked example

Grades 7, 7, 7 and 9 with equal weights yield an average of 7.500.

Before using your result

A zero weight excludes that component. Total weight must exceed zero. Check your actual assessment criteria before interpreting the result.

How to enter reliable inputs

Pre-filled values are examples only. Replace every input and check its unit before calculating: a unit error can change the result substantially. Use decimals where needed and ensure you have not left a zero where a real value is required.

When comparing scenarios, change one input at a time and save both summaries. This shows which variable explains the difference. Downloaded summaries contain your inputs and results, but do not replace professional or official documentation.

Source and scope

OpenStax: weighted mean ↗

The reference supports the underlying principle or unit; operational formulas and examples are our own implementation. We have no commercial relationship or affiliation with the cited organisation.

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