What do you need on the final? Enter your current grade, the grade you want, and how much the final is worth — get the exact score, your best case, and your worst case. Free, no signup.
| If you score on the final… | Your course grade |
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Rows marked ✓ reach your target grade.
Needed score = (target − current × (1 − weight)) ÷ weight, with the final's weight written as a decimal (25% → 0.25). Your current grade is already "banked" for the share of the course that is not the final — the formula works out how many of the remaining points the final has to supply, then converts that back into an exam score.
A reachable target. Current grade 92%, final worth 20%, target 90%. Your coursework locks in 92 × 0.8 = 73.6 of the points. You need 90 − 73.6 = 16.4 more, and the final supplies points at 0.2 per exam point: 16.4 ÷ 0.2 = 82% on the final.
An impossible one — and the ceiling. Current grade 85%, final worth 30%, target 90%. Locked in: 85 × 0.7 = 59.5. Needed: (90 − 59.5) ÷ 0.3 = 101.7% — more than a perfect score. The honest answer this calculator gives you: the highest course grade still possible is 59.5 + 30 = 89.5%, with a 100% on the final. Knowing that before the exam beats finding out after it.
Use this formula: needed score = (target grade − current grade × (1 − final weight)) ÷ final weight, with the weight written as a decimal. Example: with a current grade of 92%, a final worth 20% of the grade, and a 90% target, you need (90 − 92 × 0.8) ÷ 0.2 = 82% on the final.
Then the target is out of reach on the final alone, no matter how well you do. The calculator shows the highest course grade still possible — for example, a current grade of 85% with a final worth 30% caps out at 89.5% even with a perfect score. Extra credit or a curved final can bend that number, but do not plan on either; if the math says impossible, talk to your instructor about your options early.
This calculator assumes the final counts for exactly its stated weight and is averaged in normally. If your instructor drops your lowest test, lets the final replace a weaker score, or grades the exam on a curve, your real requirement will usually be lower than the number shown here. Treat this result as the worst case and plan against it.
Enter your average on everything except the final itself: homework, quizzes, midterms and projects, combined the way your syllabus weights them. Most grade portals (Canvas, Blackboard, PowerSchool) show a current grade that leaves the ungraded final out — that is the number to use. If your displayed grade already counts the final as a zero, it will understate your average, so recalculate without it or ask your instructor.
Yes. It is free, needs no signup, and runs 100% in your browser — your grades are never sent to a server or stored anywhere but your own device.