What Is a Grade Calculator?
A grade calculator is a tool that computes your current course average based on completed assignments, quizzes, tests, and projects. It can calculate either a simple average (all assignments count equally) or a weighted average (each assignment has a different percentage contribution to your final grade). Most college courses use weighted averages — for example, homework might count 20%, midterms 30%, and the final exam 50%.
How to Use This Grade Calculator
Add each of your assignments by clicking Add Assignment. Enter the score you received and the maximum possible score. For weighted grading, switch to Weighted Average mode and enter the weight percentage for each assignment. The calculator updates instantly as you type.
Use the Final Exam Needed section at the bottom to find out what score you need to earn on your final exam to achieve your target grade. Enter your desired grade percentage and the weight of the final exam.
Grade Calculation Formulas
Simple Average
Average = Sum of (Score ÷ Max × 100) ÷ Number of Assignments
Example: Scores of 85/100, 72/80, and 90/100 → (85% + 90% + 90%) ÷ 3 = 88.3%
Weighted Average
Weighted Average = Sum(Score ÷ Max × Weight) ÷ Sum(Weights) × 100
Example: Homework 85/100 at 20% weight, Exam 72/80 at 80% weight → (85×20 + 90×80) ÷ (20+80) = 88.7%
Final Exam Needed
Needed = (Desired − Current × (1 − FinalWeight/100)) ÷ (FinalWeight/100)
If current average is 78%, desired is 85%, final worth 40%: Needed = (85 − 78×0.6) ÷ 0.4 = (85 − 46.8) ÷ 0.4 = 95.5%
Letter Grade Scale (US Standard)
| Grade | 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 | 60–69% | 1.0 |
| F | Below 60% | 0.0 |
Benefits of Tracking Your Grades
- Stay ahead: Know your current standing in real time rather than waiting for official grade reports.
- Set realistic goals: Calculate exactly what you need on upcoming assignments to hit your target grade.
- Prioritise effort: Weighted grading shows which assignments matter most — focus your study time accordingly.
- Reduce exam anxiety: Knowing your exact required final exam score lets you prepare with a clear target.
- Plan for GPA: Track your GPA equivalents across courses to understand your cumulative standing.
Frequently Asked Questions
How is a weighted average grade calculated?
Multiply each assignment's percentage score by its weight, sum those products, and divide by the total weight. For example, a midterm worth 40% scoring 80% and a final worth 60% scoring 90% gives: (80×40 + 90×60) ÷ (40+60) = 86%.
What score do I need on my final exam to pass?
Enter your current grade, desired final grade, and final exam weight in the calculator above. The formula is: Needed = (Desired − Current × (1 − FinalWeight/100)) ÷ (FinalWeight/100). If the result exceeds 100%, your current grade makes the target unachievable without extra credit.
What are the standard letter grade cutoffs?
US standard: A+ (97–100%), A (93–96%), A− (90–92%), B+ (87–89%), B (83–86%), B− (80–82%), C+ (77–79%), C (73–76%), C− (70–72%), D (60–69%), F (below 60%). Some schools use different scales, so check your syllabus.
How do I convert my percentage grade to GPA?
On a 4.0 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 = 1.0, F = 0.0. The calculator shows the GPA equivalent automatically in the result card.
What is the difference between simple and weighted average?
A simple average treats every assignment equally regardless of importance. A weighted average accounts for each assignment's contribution to the final grade. Most courses use weighted grading — check your course syllabus to confirm which system applies to you.