Grade Calculator
Calculate your overall grade from assignment, test, and exam scores with custom weights.
🔢
Grade Calculator
Use the formula and worked example below to calculate manually.
Overview
The grade calculator computes your overall course grade from individual assignment, quiz, midterm, and final exam scores — each with their own weight — and shows what score you need on remaining assessments to reach your target grade.
How to use this calculator
- Enter each assessment (assignment, quiz, exam) with its score and weight.
- Ensure weights total 100%.
- Optionally enter a target grade to see what you need on the remaining work.
- The calculator shows your current weighted grade and the letter grade equivalent.
Understanding the inputs & results
Weight
The percentage contribution of an assessment to the final grade. Weights must sum to 100%.
Weighted score
Score × Weight / 100 for each assessment.
Current grade
The sum of weighted scores for completed assessments.
Target grade
The minimum final grade you want to achieve.
The formula
Weighted grade
Grade = Σ(Score × Weight) / Σ(Weights of completed assessments)
If not all assessments are complete, the grade is normalised to completed weight. Needed score on remaining = (Target − current weighted sum) / remaining weight × 100.
Worked example
Assignments 30% (score 85), Midterm 30% (score 70), Final 40% (not yet done). Target: 80%.
- Completed weighted sum = 85×0.3 + 70×0.3 = 25.5 + 21 = 46.5.
- Needed from Final = (80 − 46.5) / 0.4 = 83.75.
✓ Need 83.75% on the Final to achieve 80% overall.