Final Grade Calculator

Q: What if my final is worth a different weight?

Change Final exam weight — that is the single number that changes the answer most.

Q: What if I already took the final?

Use the Already took the final option above — it gives your overall grade, not a needed score.

With a current grade of 84%, a final worth 30%, and a target of 85%, you need 87.3% on the final. This free final grade calculator gives that answer live, with no sign-up and nothing sent to a server.

Step 1 — Your numbers

Current grade (%) Final exam weight (%) Target course grade (%)

You need 87.3% on the final for 85%.

Formula: (85 − 84 × 0.70) ÷ 0.30 = 87.3%

Needed for common targets: For 90%: 104.0% • For 80%: 70.7% • For 70%: 37.3% • For 60%: 4.0%

Step 2 — What if I score a given grade on the final?

If I score on the final (%)

If you score 90% on the final, your course grade becomes 85.8%.

Target 85% is reached at this final score.

What if I already took the final?

Standard — final has its own weight (above) I already took the final — what is my overall grade? Final counts as one test, equal to my other tests

How this final grade calculator works

Needed on final = (target − current × (1 − final weight)) ÷ final weight. That is the direct answer, and the rest of this section explains why it works.

Worked example: current 84%, final worth 30%, target 85% gives (85 − 84 × 0.70) ÷ 0.30 = (85 − 58.8) ÷ 0.30 = 87.3%. If you score 90% instead, your course grade becomes 84 × 0.70 + 90 × 0.30 = 58.8 + 27 = 85.8%.

Definitions: current grade is your grade before the final; final weight is the share of the course the final is worth; target is the course grade you want. Edge cases: a needed score above 100% means the target is out of reach on the final alone; a needed score at or below 0% means you have already secured the target. A common mistake is using the weight already completed instead of the final weight.

Final grade steps — infographic

Four steps: current grade, final weight, target, then the needed score. The worked example in the graphic is 84%, 30%, and 85%, giving 87.3% needed.

Share this infographic

Copy and paste this snippet to embed the infographic and link back to this page:

<a href=”https://gogradecalculator.com/final-grade-calculator/”><img src=”data:image/svg+xml,%3Csvg xmlns=’http://www.w3.org/2000/svg’ width=’800′ height=’320’%3E%3Crect width=’800′ height=’320′ fill=’%23ffffff’/%3E%3Ctext x=’20’ y=’60’ font-size=’22’%3EFinal grade steps: 84% current, 30% final weight, 85% target = 87.3% needed%3C/text%3E%3Ctext x=’20’ y=’300′ font-size=’14’%3Egogradecalculator.com%3C/text%3E%3C/svg%3E” alt=”Four steps to work out the final grade you need: current grade 84 percent, final weight 30 percent, target 85 percent, giving 87.3 percent needed on the final” width=”800″ height=”320″ loading=”lazy”></a>

Final counts as one test

If the final counts as one test, equal to your other tests, its weight is 1 divided by the total number of tests. For example, with a current average of 84% from 4 other tests and a final score of 90%, the overall grade is (84 × 4 + 90) ÷ 5 = 426 ÷ 5 = 85.2%.

Frequently asked questions

What if my final is worth a different weight? Change “Final exam weight” — that is the single number that changes the answer most. A larger final weight makes the needed score closer to the gap between your current grade and your target.

Can I use letter grades? Convert your current and target letters to % first using your school’s scale (for example, B is about 83–86%), then enter the %. The % answer is exact; the letter is a guide.

What if I already took the final? Use the “Already took the final” option above — it gives your overall grade, not a needed score. Enter the final score you received and read the overall result.

Need a full course average first? Use the Average Grade Calculator, then bring that average here as your current grade. For a single test, use the Grade Calculator. See also our Privacy Policy.