🎓 What is a Grade Calculator?

A Grade Calculator helps you calculate your final grade or percentage based on:

• Test scores
• Assignment marks
• Exam results
• Weightage (%)

👉 It shows:

• Final percentage
• Letter grade (A, B, C, etc.)

🎯 How to Use a Grade Calculator

1. Enter Scores
   • Example: 80, 75, 90
2. Enter Total Marks / Weight (%)
   • Example: 100 each OR weighted (30%, 30%, 40%)
3. Click “Calculate”
4. View Result
   • Final percentage
   • Grade (A/B/C)

📊 Formula Used

👉 Percentage = (Total Obtained Marks / Total Marks) × 100

👉 For weighted grades:
👉 Final Grade = Σ (Score × Weight) / 100

📊 Example

👉 Scores = 80, 75, 90
👉 Total = 300

➡️ Percentage = (245 / 300) × 100
➡️ Percentage = 81.67%

➡️ Grade = A (approx)

⚡ Common Uses

• 🎓 School/college results
• 📊 Exam performance
• 📝 Assignment grading
• 📈 Academic tracking