Weighted grades
A weighted grade multiplies each score by its category or assignment weight, then divides by the total weight. Missing work, extra credit and dropped scores must be handled according to the course rules.
GPA and credits
GPA converts grades into grade points and weights them by credits. A four-credit course affects GPA more than a one-credit course. Weighted GPA systems may add points for honors or advanced courses, but policies vary.
Common mistakes
- Entering percentage weights that do not add to 100.
- Mixing letter grades, percentages and points without a conversion scale.
- Ignoring credits in GPA calculations.
- Assuming one school's GPA scale applies everywhere.
Weighted grade and GPA examples
A weighted course grade multiplies each component by its weight. If exams count 60% and coursework counts 40%, an 82 exam average and 90 coursework average gives 85.2 overall: 82 x 0.60 + 90 x 0.40.
GPA calculations usually multiply grade points by credits. An A worth 4.0 in a 4-credit course contributes 16 quality points. A B worth 3.0 in a 3-credit course contributes 9. Total GPA is total quality points divided by total credits. The calculator must not assume one grading system is universal because schools use different scales, weights and rounding rules.
Useful calculators
FAQ
Why does my school GPA differ?
Your school may use a different grade-point scale, weighting rule, rounding rule or credit policy.
Do weights need to add to 100?
They should add to the total basis used by the course. Many calculators normalize weights, but the user should still check them.
Should extra credit be included?
Only if the course policy defines how extra credit affects the denominator and maximum score.
Last reviewed: 2026-05-16.