GWAM Calculator

Written by Great Medico

Updated September 25, 2026 •2 min read

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The GWAM Calculator is most useful when you want a quick result that still makes its assumptions visible. It helps you calculate a credit-weighted average mark across the three courses entered on the page, letting you test a second set of inputs and see immediately which change moved the output.

What this calculator does

For the GWAM Calculator, the primary output is the page’s weighted average mark. Supporting values include Total credits. Every value shown by the GWAM Calculator comes from the visible fields used by this rule. In practical terms, it is best used to calculate a credit-weighted average mark across the three courses entered on the page.

How to use it

Enter Course mark 1, Credit weight 1, Course mark 2, Credit weight 2, then complete Course mark 3, Credit weight 3. For the GWAM Calculator, use values that all describe the same scenario. When comparing two GWAM Calculator scenarios, change one input at a time and keep the other entries unchanged so the source of the difference stays clear.

How the calculation works

For the GWAM Calculator, gWAM = (mark₁×credit₁ + mark₂×credit₂ + mark₃×credit₃) ÷ (credit₁+credit₂+credit₃). The denominator must be positive, so a higher-credit course has proportionally more influence on the result.

Example

For the GWAM Calculator, using the page defaults—Course mark 1 = 75; Credit weight 1 = 6; Course mark 2 = 82; Credit weight 2 = 6—produces 75 % for the weighted average mark. If the GWAM Calculator result differs, recheck the entered counts and compare them with the arithmetic described above.

How to interpret the result

A higher-credit course moves GWAM more strongly than a lower-credit course. Use the weighted result only if the credit weights match the institution’s actual averaging policy.

Limitations and notes

For the GWAM Calculator, the result uses only the visible work, study, score, timing, cost, count, or measurement fields. For the GWAM Calculator, institutional rules, individual variation, setup time, or process details not represented by those fields can change how the number should be used.