Math
Grade Calculator
Calculate your overall class grade from individual assignment scores. Supports both weighted grading (assignments with different point values) and simple averaging. Includes a final exam grade calculator to find the score you need.
Assignment
Score
Out of
Weight (%)
Overall Grade
84%
B
🎯 What grade do I need on my final exam?
Letter Grade Scale Reference
| Letter Grade | Percentage Range | GPA Points |
|---|---|---|
| A+ | 97–100% | 4.0 |
| A | 93–96% | 4.0 |
| A- | 90–92% | 3.7 |
| B+ | 87–89% | 3.3 |
| B | 83–86% | 3.0 |
| B- | 80–82% | 2.7 |
| C+ | 77–79% | 2.3 |
| C | 73–76% | 2.0 |
| C- | 70–72% | 1.7 |
| D+ | 67–69% | 1.3 |
| D | 63–66% | 1.0 |
| D- | 60–62% | 0.7 |
| F | Below 60% | 0.0 |
Standard US grading scale. Some institutions use different cutoffs — always check your course syllabus.
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Frequently Asked Questions
How do I calculate my overall grade?
For simple (unweighted) grading: add up all your percentage scores and divide by the number of assignments. For weighted grading: multiply each assignment's percentage score by its weight, add them all up, and divide by the total weight. Example: Homework 85% (weight 20) + Midterm 78% (weight 30) + Final 90% (weight 50) = (85×20 + 78×30 + 90×50) ÷ 100 = (1700 + 2340 + 4500) ÷ 100 = 85.4%.
What grade do I need on my final exam?
Formula: Final exam score needed = (Target grade − Current grade × (1 − Final weight%)) ÷ Final weight%. Example: current grade is 82%, you need 85% to pass, and the final is worth 30%: Final needed = (85 − 82 × 0.70) ÷ 0.30 = (85 − 57.4) ÷ 0.30 = 27.6 ÷ 0.30 = 92%. Use the 'Final Exam Needed' section below to calculate this automatically.
What is weighted grading?
Weighted grading assigns different levels of importance to different assignments. A final exam worth 40% of your grade impacts your GPA 4× more than a quiz worth 10%. To calculate: convert each score to a percentage, multiply by its weight, sum all results, and divide by total weight. Weights don't have to add to 100 — the calculator normalizes them automatically.
What is the difference between weighted and unweighted GPA?
Unweighted GPA uses a standard 4.0 scale regardless of course difficulty (A = 4.0 in all classes). Weighted GPA awards bonus points for honors, AP, or IB courses — typically A = 5.0 in AP/IB classes. Most colleges recalculate GPAs on their own scale, so the distinction matters more for class rank than college admissions. This calculator computes course grades, not GPA — use the GPA Calculator for overall GPA.
What percentage is an A, B, C, D, and F?
Most US schools use: A = 90–100%, B = 80–89%, C = 70–79%, D = 60–69%, F = below 60%. Some schools use a stricter scale: A = 93–100%, B = 85–92%, C = 75–84%. Some professors use +/− grades (A- = 90–92%, A = 93–96%, A+ = 97–100%). Always check your specific course syllabus for the exact grading scale used.
Can I still pass if I fail the final exam?
It depends on the final's weight and your current grade. Use the 'Final Exam Needed' calculator below — if the required score exceeds 100%, passing is mathematically impossible with the current grade. Example: current grade 55%, need 60% to pass, final worth 25%. Final needed = (60 − 55 × 0.75) ÷ 0.25 = (60 − 41.25) ÷ 0.25 = 75%. That's achievable. But at current 40%: (60 − 40 × 0.75) ÷ 0.25 = (60 − 30) ÷ 0.25 = 120% — mathematically impossible.
How do I raise my grade in the last few weeks of a course?
Focus on the highest-weighted remaining assessments. A poor grade on a 5% homework matters far less than the upcoming 30% final. Calculate exactly what final score you need (using this calculator) so you have a concrete target. Attend office hours, review past exams and feedback, focus on concept gaps rather than rereading notes. Partial credit matters — attempt every question on exams even if uncertain.