Grade Calculator
Calculate weighted course grades, determine what you need on your final exam, and convert between grading scales. Perfect for students tracking academic performance.
Grading Scale Reference
US Standard Scale
| Letter | Percentage | GPA (4.0) |
|---|---|---|
| A | 90-100% | 4.0 |
| B | 80-89% | 3.0 |
| C | 70-79% | 2.0 |
| D | 60-69% | 1.0 |
| F | 0-59% | 0.0 |
US Plus/Minus Scale
| Letter | Percentage | GPA (4.0) |
|---|---|---|
| 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 | 0-59% | 0.0 |
UK University Scale
| Classification | Percentage |
|---|---|
| First Class Honours | 70-100% |
| Upper Second (2:1) | 60-69% |
| Lower Second (2:2) | 50-59% |
| Third Class | 40-49% |
| Fail | 0-39% |
How to Use the Grade Calculator
Weighted Average Mode
- Add assignments by clicking "Add Assignment" for each graded item (exams, homework, projects, etc.).
- Enter the score you received for each assignment as a percentage or points.
- Enter the weight that each assignment contributes to your final grade (must total 100%).
- Choose your grading scale from the dropdown to see your letter grade and GPA.
- Your final grade updates automatically as you type. The calculator shows if your weights don't add to 100%.
Final Exam Mode
- Enter your current grade before the final exam (as a percentage).
- Enter your desired grade — what you want to achieve overall in the course.
- Enter the final exam weight — what percentage of the total grade the final is worth.
- The calculator will show what score you need on the final exam to achieve your desired grade.
Academic Success Tips
Understanding Weighted Grades
A weighted grade system assigns different importance to different assignments. For example, a final exam might be worth 30% of your grade while weekly quizzes are only worth 10%. This means the final exam has three times the impact on your overall grade.
To calculate a weighted average, multiply each score by its weight, sum all the products, then divide by the total weight. For example: if you scored 90% on homework (20% weight) and 80% on a midterm (30% weight), the contribution is (90 × 0.2) + (80 × 0.3) = 18 + 24 = 42 out of 50 total weight, or 84%.
Strategic Grade Planning
Use the "Final Exam Needed" mode to strategically plan your study time. If you need a 95% on the final to get an A in the class, you'll know to prioritize that course. If you only need a 70% for an A, you might allocate more time to other courses.
Remember that some goals may be mathematically impossible. If the calculator shows you need over 100% on the final, you cannot achieve your desired grade through the final exam alone. In this case, focus on doing your best or explore extra credit opportunities.
GPA Considerations
GPA (Grade Point Average) is typically calculated on a 4.0 scale in the US. Your cumulative GPA is the average of all your course GPAs, often weighted by credit hours. A 3.5+ GPA is generally considered very good, with 3.8+ being excellent and often required for competitive programs or scholarships.