Weighted Average Calculator

What This Calculator Does

This weighted average calculator computes a credit-weighted mean of percentage marks. Each unit mark is multiplied by its credit points before the total is divided by combined credit — the same structure Uni uses for WAM when year-level weighting is not applied.

Add as many units as you need for a semester snapshot, a major sequence, or any custom group. The result tells you the true average when 12 cp cores count twice as much as 6 cp electives.

• Enter marks 0–100 with matching credit points per row.
• Semester or custom groups — not necessarily your full degree.
• Complements the homepage WAM calculator for Year 1 half-weighting.
• Instant result as soon as two valid rows are filled.

How the Calculation Works

Formula: weighted average = Σ(mark × cp) ÷ Σ(cp). A 82 in FIT2004 (6 cp) contributes 492 weighted points; an 82 in ENG1001 (12 cp) contributes 984 — double the influence despite the same percentage.

The tool does not apply Uni Year 1 × 0.5 weighting. For official cumulative WAM, use the Uni official WAM calculator after exporting your full transcript.

When Students Should Use This Calculator

Reach for this tool when you want a quick credit-weighted snapshot without loading your entire degree history — common mid-semester when only four units are in play.

It also helps compare scenarios: what happens if your 12 cp unit lands 65 vs 75 while electives stay flat.

• Semester review before SWOTVAC.
• Modelling one unit mark change on a subset of units.
• Verifying spreadsheet maths against an independent calculator.
• Teaching groups where not all units share equal credit loads.

Step-by-Step Guide

Follow this workflow each time you use the tool so your inputs match WES or your unit guide.

1. List each unit in the group with its final percentage mark from Moodle or WES.
2. Enter the credit points beside each mark — check the handbook if unsure (most undergrad units are 6 or 12 cp).
3. Add rows for every unit in the period you are averaging.
4. Read the weighted average result and compare mentally to a simple mean if marks feel uneven.
5. For full-degree WAM with Year 1 half-weight, switch to the main WAM calculator.
6. Save a screenshot if you are sharing results with a study group or tutor.

Practical Examples

Worked scenarios below use realistic Uni-style marks and credit loads. Enter the same values in the calculator to verify.

Common Mistakes Students Make

• Averaging marks without entering credit points when loads differ.
• Including withdrawn or incomplete units with no final mark.
• Mixing Year 1 and Year 2 units without half-weight adjustment for official WAM.
• Using assignment running totals instead of final unit marks.
• Forgetting that 12 cp units move the average twice as much as 6 cp units.

Tips to Improve Academic Performance

• Sort units by credit points descending — review the highest-weight marks first.
• Run two scenarios (expected vs conservative) before final exams.
• Export marks from WES each results period to avoid manual typos.
• Pair with the grade average calculator to see simple vs weighted side by side.
• Track semester weighted average each teaching period to spot downward trends early.

Important Notes About the university Policies

Official WAM on WES applies credit weighting plus Year 1 units counted at half weight toward the cumulative total. This calculator uses standard credit weighting only — ideal for semester groups, not a WES transcript substitute.

• Year 1 half-weighting: use the Uni official WAM calculator.
• Excluded results (some WN/WDN cases) are omitted from official WAM — do not enter them here.

Credit-Weighted Average

A weighted average multiplies each mark by its credit points before dividing by total credit. This matches how WAM planning works when all units count equally by level weighting.

Enter unit marks and credit points for the set you want to average — one semester, a year, or any group of completed units.

When to Use This Tool

For cumulative degree WAM with Year 1 half-weighting, use the main WAM calculator on the homepage.

• Compare 6 cp vs 12 cp impact before results release.
• Check semester performance with credit weighting.
• Pair with the grade average calculator to see simple vs weighted means.

Formula Reminder

Credit-weighted average = Σ(mark × credit points) ÷ Σ(credit points). A 75 in a 12 cp unit contributes 900 weighted points; the same 75 in a 6 cp unit contributes 450. That is why students with identical simple means can have different official WAM when their credit loads differ.

Semester-only groups exclude prior years — useful when reviewing one teaching period before full degree weighting applies. Export unit marks from WES or Moodle to populate the calculator accurately.