🎓 Grade Calculator
Enter your score and the total points to convert to a letter grade and percentage.
🅾 Grading Scale Reference
| Letter | Percentage | GPA Points |
|---|---|---|
| A+ | 97100% | 4.0 |
| A | 9396% | 4.0 |
| A? | 9092% | 3.7 |
| B+ | 8789% | 3.3 |
| B | 8386% | 3.0 |
| B? | 8082% | 2.7 |
| C+ | 7779% | 2.3 |
| C | 7376% | 2.0 |
| C? | 7072% | 1.7 |
| D+ | 6769% | 1.3 |
| D | 6366% | 1.0 |
| F | Below 60% | 0.0 |
Tip: Letter grades vary by institution. Some schools use a +/? system, others use a flat AF scale. Always check your school's specific grading policy for accuracy.
🔗 Related Calculators
Understanding Your Grade: Weighted vs. Unweighted GPAs
Grade calculation seems straightforward, but the specifics vary significantly between courses, schools, and countries. Understanding exactly how your final grade is calculated helps you strategically prioritize assignments and understand where to focus your effort.
Weighted Grade Calculation
Most courses use weighted grades, where different components contribute different percentages to your final grade. Example: Homework 20% + Midterm 30% + Final Exam 50%. If you score 85% on homework, 78% on midterm, and 92% on the final: (85×0.20) + (78×0.30) + (92×0.50) = 17 + 23.4 + 46 = 86.4%. The final exam contributed almost half the total — making it by far the most important component to prepare for.
What Grade Do You Need on the Final?
Working backward is often more useful: if you need a 90% in the course and your current weighted average going into the final is 88%, you can calculate the minimum final exam score needed. Our calculator does this automatically — enter your current grades and weights, then set your target grade to see exactly what score you need on remaining assessments.
GPA Conversion
The standard US GPA scale converts percentages as follows: 93–100% = A (4.0), 90–92% = A- (3.7), 87–89% = B+ (3.3), 83–86% = B (3.0), 80–82% = B- (2.7), 77–79% = C+ (2.3), 73–76% = C (2.0). Weighted GPA scales (used for honors and AP classes) add 0.5 to honor classes and 1.0 to AP classes, allowing GPAs above 4.0.
Weighted vs Unweighted Grades
An unweighted grade simply converts your score to a letter (90–100% = A, 80–89% = B, etc.). A weighted grade accounts for the relative importance of different assignments in your final grade. For example, if homework is 20% of your grade, quizzes are 30%, and the final exam is 50%, a 90% on homework, 75% on quizzes, and 85% on the final gives: (90×0.20) + (75×0.30) + (85×0.50) = 18 + 22.5 + 42.5 = 83%, a B. Most college courses use weighted categories rather than straight point totals — always check your syllabus to understand how grades are calculated.
Letter Grade to GPA Conversion
The standard conversion used at most US institutions: A+ = 4.0, A = 4.0, A- = 3.7, B+ = 3.3, B = 3.0, B- = 2.7, C+ = 2.3, C = 2.0, C- = 1.7, D+ = 1.3, D = 1.0, D- = 0.7, F = 0.0. Note that some schools give A+ a value of 4.0 and others give it 4.3 — check your school's policy. International grading systems vary widely: UK universities use a percentage-based system where 70%+ is "First Class" (equivalent to an A in the US), while Australian universities use High Distinction (85%+), Distinction (75–84%), Credit (65–74%), Pass (50–64%), and Fail (below 50%).
What Score Do You Need on the Final?
To calculate the minimum score needed on a final exam: Required Final Score = (Target Grade − Current Grade × (1 − Final Weight)) ÷ Final Weight. Example: you currently have 78% with a final worth 30% of your grade, and you want an 80% overall. Required final = (0.80 − 0.78 × 0.70) ÷ 0.30 = (0.80 − 0.546) ÷ 0.30 = 0.254 ÷ 0.30 = 84.7%. You need at least an 85% on the final to earn an 80% overall. If the required score exceeds 100%, the desired grade is no longer mathematically achievable from the final exam alone.
