Grade Calculator

How to Calculate Weighted Grades

Weighted grades give different assignments or categories different levels of importance. To calculate your weighted grade:

1. Multiply each grade by its weight (as a decimal)
2. Add all the weighted grades together
3. Divide by the sum of all weights (if not adding to 100%)

Example Calculation

If you have: Homework (20%) = 95%, Midterm (30%) = 82%, Final (50%) = 88%

(95 × 0.20) + (82 × 0.30) + (88 × 0.50) = 19 + 24.6 + 44 = 87.6%

What Grade Do I Need on My Final?

To find what you need on your final exam, use this formula:

Needed = (Target − Current × (1 − FinalWeight)) ÷ FinalWeight

For example, if your current grade is 85%, you want a 90%, and the final is worth 30%:

Needed = (90 − 85 × 0.70) ÷ 0.30 = (90 − 59.5) ÷ 0.30 = 101.67%

Standard Grading Scale