I Have a 93 in the Class — What Do I Need on the Final?
Going into the final with a 93%: if the final is worth the typical 20%, you need 78% for an A and 28% for a B. Every common weight is below — or set your exact numbers in the calculator.
Runs entirely in your browser — nothing is saved or sent anywhere.
What you need at every final-exam weight
| Final worth | For A | For B | For C | For Pass (D) |
|---|---|---|---|---|
| 10% | 63% | Locked in ✓ | Locked in ✓ | Locked in ✓ |
| 15% | 73% | 6.3% | Locked in ✓ | Locked in ✓ |
| 20% | 78% | 28% | Locked in ✓ | Locked in ✓ |
| 25% | 81% | 41% | 1% | Locked in ✓ |
| 30% | 83% | 49.7% | 16.3% | Locked in ✓ |
| 40% | 85.5% | 60.5% | 35.5% | 10.5% |
| 50% | 87% | 67% | 47% | 27% |
Reading this table
"Locked in" means even a zero on the final keeps that grade. "Not possible" means a perfect final still wouldn't get you there — with a 93% and a heavily weighted final, your ceiling is 96.5% (50% weight) to 93.7% (10% weight). The math: needed = (target − current × (1 − weight)) ÷ weight.
Worth knowing
Confirm the scale in your syllabus
The 90/80/70/60 letter cutoffs used here are the most common US scale, but plenty of courses curve, use plus/minus bands differently, or set an A at 94. The syllabus — not any calculator — is the contract that counts.
Ask about rounding before finals week
An 89.5 is an A- in some classes and a B+ in others. Professors have wildly different rounding policies, and the polite time to ask is mid-semester, not the night grades post.
Common questions
Do these calculators store my grades?
No. Everything is computed in your browser the moment you press Calculate — nothing is uploaded, saved or seen by anyone else. Refresh the page and it's gone.
What's the difference between weighted and unweighted averages?
An unweighted average treats every score equally: add them up, divide by the count. A weighted average multiplies each category by its share of the grade first — homework 20%, midterms 40%, final 40% — which is how most courses actually work. If your syllabus lists category percentages, you need the weighted version.