I Have a 92 in the Class — What Do I Need on the Final?
Going into the final with a 92%: if the final is worth the typical 20%, you need 82% for an A and 32% for a B. Every common weight is below — or set your exact numbers in the calculator.
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What you need at every final-exam weight
| Final worth | For A | For B | For C | For Pass (D) |
|---|---|---|---|---|
| 10% | 72% | Locked in ✓ | Locked in ✓ | Locked in ✓ |
| 15% | 78.7% | 12% | Locked in ✓ | Locked in ✓ |
| 20% | 82% | 32% | Locked in ✓ | Locked in ✓ |
| 25% | 84% | 44% | 4% | Locked in ✓ |
| 30% | 85.3% | 52% | 18.7% | Locked in ✓ |
| 40% | 87% | 62% | 37% | 12% |
| 50% | 88% | 68% | 48% | 28% |
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 92% and a heavily weighted final, your ceiling is 96% (50% weight) to 92.8% (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.
The registrar's number wins
Online gradebooks lag, professors enter marks late, and rounding policies differ by course. Any calculator — including this one — is a planning tool; the transcript is the record.
Knowing the number is the easy part
You need 82% for an A, which is reachable. The failure mode from here is spreading effort evenly instead of aiming it at the part of the course that actually carries marks.
We keep free study resources for 13 subjects — what specifically loses students marks in that course, free courses and open textbooks worth the time, and separate plans for whether you have a week or one night. Algebra, Precalculus, Calculus, Statistics, General Chemistry, or all 13 subjects.
Common questions
Is a 90 an A or an A-?
In plus/minus systems, 90–92 is typically an A- and 93+ is an A, which affects GPA (3.7 vs 4.0). In straight-letter systems, everything from 90 up is simply an A. This calculator shows the plus/minus convention because it's the most common — your syllabus decides which applies to you.
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.