Exam Weight Calculator
Finds an exam’s weight from what it did to your grade.
Exam weight
— %
Share sends a link that reopens these numbers. Copy details pastes the full breakdown as a list.
Your grade had the exam scored 0% — %
Your grade had the exam scored 100% — %
Reading this —
The formula
weight = (after − before) ÷ (exam − before) × 100
Comes from after = before × (1 − w) + exam × w. It assumes nothing else was graded in between.
What to watch out for
The syllabus is the authority on weights. This is for when it is unclear, or to check it.
Frequently Asked Questions
How do I find the weight of an exam?
Divide the change in your grade by the gap between the exam score and your earlier grade. Going from 80% to 83% with a 90% exam means a weight of 30%.
How much can a 30% exam change my grade?
From 80%, between 56% and 86%.