Final Grade Calculator
Enter your current grade, your target, and the final's weight to see the score you need on the final exam.
Reviewed by the OmniCalc teamMethod verified 2026-07-01
97.5%
= on a final worth 40%
Needed on the final 97.5%Show steps
- Final weight: w = 40% ÷ 100 = 0.4.
- Current grade's contribution: 85% × (1 − 0.4) = 51%.
- Needed score = (target − current contribution) ÷ w = (90% − 51%) ÷ 0.4 = 97.5%.
How to use the final grade calculator
- 1Enter your current grade — everything earned before the final, as a percentage.
- 2Set the target grade you want for the course overall.
- 3Set the final weight — how much of the grade the final decides (defaults to 40%).
- 4Read the score you need on the final; see the working under Show steps.
Out-of-reach and already-won targets
If the needed score is above 100%, the target is out of reach on this final alone — look for extra credit or reset to a realistic goal. If it comes back at 0% or less, the target is already secured: the final only adds a cushion.
Frequently asked questions
How do I calculate the grade I need on the final?
Take your target course grade, subtract what your current grade already contributes, then divide by the final's weight. As a formula with w = final weight ÷ 100: needed = (target − current × (1 − w)) ÷ w.
What does the final weight mean?
It's the share of your overall course grade that the final exam decides — often listed on the syllabus as something like 40%. A heavier final gives one exam more power to move your grade, up or down.
What if the needed score is above 100%?
Then the target is out of reach on the final alone — no exam score can pull you there. Aim for the highest realistic grade, ask about extra credit, or recompute against a more attainable target.
What if the needed score is zero or negative?
You've already locked in the target: even a 0% on the final would keep you at or above it. Anything you earn is a cushion, so you can focus your energy elsewhere.