- Weighted Average tab: Add your assignments, exams, and projects with their grades (%) and weights (%). The tool comes pre-populated with sample data — simply modify or add rows. Click Calculate to see your weighted average, letter grade (A+ to F), and GPA on a 4.0 scale. Total weight should equal 100% for accurate results.
- Final Grade Needed tab: Enter your current grade (%), your desired final grade (%), and the weight of your final exam (%). Click Calculate to see exactly what score you need on the final. The tool tells you if this is achievable and shows the maximum possible grade.
- GPA Scale tab: Reference table showing the standard US letter grade scale (A+ through F) with corresponding percentage ranges and GPA values on a 4.0 scale, each with a color-coded indicator.
Grade Calculator — Weighted Average, GPA & Final Exam
Knowing your academic standing shouldn't require guesswork. Our Grade Calculator computes weighted averages, converts to letter grades and GPA, and calculates the exact score you need on your final exam — all running entirely in your browser with complete privacy.
Weighted Average Calculator
Most courses use weighted grading, where different assignments contribute differently to your final grade. The weighted average formula is:
Weighted Average = (Grade₁ × Weight₁ + Grade₂ × Weight₂ + ...) ÷ Total Weight
For example, if your homework (20% weight) is 92%, midterm (30%) is 85%, and final (50%) is 88%, your weighted average is: (92×20 + 85×30 + 88×50) ÷ 100 = 87.9%
Dynamic Row System
Add unlimited assignments, exams, projects, or participation grades. Each row has a label, grade percentage, and weight. The pre-populated template includes Homework, Midterm, Project, and Final Exam — customize freely for your specific course structure.
Letter Grade and GPA Conversion
The calculator automatically converts your weighted average to the standard US letter grade scale:
- A+ (97-100%) — GPA 4.0: Exceptional performance
- A (93-96%) — GPA 4.0: Excellent mastery of material
- A− (90-92%) — GPA 3.7: Very strong performance
- B+ (87-89%) — GPA 3.3: Good with notable strengths
- B (83-86%) — GPA 3.0: Above average understanding
- B− (80-82%) — GPA 2.7: Meets expectations well
- C+ (77-79%) — GPA 2.3: Satisfactory with room for improvement
- C (73-76%) — GPA 2.0: Average performance
- C− (70-72%) — GPA 1.7: Below average
- D (60-69%) — GPA 0.7-1.3: Minimal passing
- F (0-59%) — GPA 0.0: Failing
Final Exam Grade Calculator
One of the most common student questions: "What do I need on the final?" Our calculator answers this precisely using the formula:
Needed Grade = (Desired − Current × (1 − FinalWeight)) ÷ FinalWeight
For example, if your current grade is 82%, you want a 90%, and the final is worth 40%: Needed = (90 − 82 × 0.6) ÷ 0.4 = 102% — not achievable!
The tool automatically detects whether target is achievable (≤ 100%) and shows the maximum possible final grade based on your current standing.
How to Use Effectively
- Track progress: Enter completed assignments to see your running average throughout the semester.
- Plan ahead: Leave upcoming assignments blank to calculate what grades you need.
- Final exam strategy: Use the Final Grade calculator to determine your target score before exam day.
- Compare scenarios: Try different grade combinations to see how they affect your final average.
Privacy and Security
All grade calculations run entirely in your browser. No academic data, grades, or course information are transmitted to any server. Your academic records remain completely private.