Grade Calculator
Calculate your weighted course grade and see your letter grade
Final Grade
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Frequently Asked Questions
How do I calculate a weighted grade?
Multiply each score by its weight percentage, sum all the products, and divide by the total weight. Example: 80% score with 30% weight contributes 80 × 0.30 = 24 points. Sum all contributions and divide by total weight.
What score do I need on the final exam to pass?
Use our Final Grade Calculator for that. Rearranging the weighted grade formula: Final Score = (Target Grade - Current Weighted Points) / Final Weight. If you need 70% overall, have 65% from 70% of the course, you need: (70 - 65×0.7) / 0.3 = 81.7% on the final.
What is a 4.0 GPA scale?
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 | F: 0.0. Most US colleges use this scale. Some use a 4.33 scale where A+ = 4.33.
Does rounding matter in grade calculations?
Yes. Many professors round final grades (e.g., 89.5% rounds to 90% = A-). Others truncate. Always check your syllabus. A 0.1% difference can change your letter grade, so every assignment matters throughout the semester.
How do extra credit points affect my grade?
Extra credit adds points to your numerator without changing the denominator (total possible points). Even small amounts of extra credit can significantly affect your grade when you are borderline. A 2-point extra credit on a 100-point scale raises a 79 to 81.
How Weighted Grades Work
Different assignments count for different percentages of your final grade. A 90% on an assignment worth 10% contributes less than a 75% on a final exam worth 40%.
Example: 80% homework (20%) + 70% midterm (30%) + 75% final (50%)
= (80×0.20) + (70×0.30) + (75×0.50)
= 16 + 21 + 37.5 = 74.5% overall