📊 Grade & Percentage Calculator
Assignment/Exam Grades
Assignment/Exam (optional)
Grade
Weight
📌 Final Grade Planning (Optional)
📚 Standard Grade Scale
A+ / A / A-90-100%
B+ / B / B-80-89%
C+ / C / C-70-79%
D+ / D / D-60-69%
F0-59%
√..
Grade & Percentage
Calculator
The Grade & Percentage Calculator helps users calculate percentages, grades, and score distributions quickly and accurately. It is especially useful for students, teachers, and academic professionals.
By entering total marks and obtained scores, users can instantly calculate percentages and grades without manual formulas. This saves time and ensures consistency in results.
The calculator is simple to use and works on all devices, helping students track academic performance and understand grading outcomes clearly.
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📝 Grade Calculator – Quick Reference
Grade Scale
| Letter Grade | Percentage Range | Quality Points |
|---|---|---|
| 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 |
How It Works
| Feature | Description |
|---|---|
| Assignment Name | Optional label for each grade entry |
| Grade Selection | Choose letter grade (A+ through F or "-" to skip) |
| Weight/Points | Enter weight value (points, percentage, etc.) |
| Add Rows | Click "Add More Rows" to add assignments |
| Final Grade Goal | Set target grade to calculate what's needed |
| Calculation | Weighted average based on all entered grades |
📚 Complete Grade & Percentage Calculator Guide
📊 Grade Calculator Basics
- Weighted Average: Each assignment contributes based on its weight
- Letter Grades: Automatically converts to percentages
- Flexible Input: Use points, percentages, or any unit consistently
- Live Updates: See results instantly after calculating
✏️ Using the Grade Calculator
- Step 1: Enter assignment names (optional)
- Step 2: Select letter grade from dropdown
- Step 3: Enter weight or point value
- Step 4: Add more rows as needed
- Step 5: Click Calculate to see overall grade
🎯 Final Grade Planning
- Set Goal: Choose your desired final grade
- Remaining Weight: Enter weight of future assignments
- See Requirements: Calculator shows what grade you need
- Plan Ahead: Know exactly what's needed to reach your goal
🔢 Percentage Calculation Basics
- Percentage: A ratio expressed as a fraction of 100
- Symbol: Represented by the % sign
- Formula: (Part ÷ Whole) × 100 = Percentage
- Applications: Grades, discounts, statistics, finance
💡 Real-World Examples
Grade Scenario:
- Quiz 1: A (10 points) = 97%
- Midterm: B+ (30 points) = 87%
- Final: A- (40 points) = 90%
- Project: B (20 points) = 83%
- Overall: 89.4% (B+)
💎 Tips & Tricks
- Consistency: Use same units for all weights
- Skip Grades: Set to "-" to exclude from calculation
- Decimal Precision: Results show two decimal places
- Clear Button: Reset all fields to start fresh
- Multiple Scenarios: Test different grade combinations
📐 Percentage Examples
- 20% of 150: 0.20 × 150 = 30
- 75 is what % of 300: (75 ÷ 300) × 100 = 25%
- 40 is 80% of what: 40 ÷ 0.80 = 50
- Increase 200 by 15%: 200 + (200 × 0.15) = 230
- Decrease 100 by 25%: 100 - (100 × 0.25) = 75
⚖️ Understanding Weights
- Points System: Total points each item is worth
- Percentage System: % of final grade (must total 100)
- Equal Weight: Use same number for all items
- Mixed Weights: Higher weight = more impact on grade
⚠️ Common Mistakes to Avoid
- Mixing Units: Don't mix points and percentages
- Zero Weights: Assignments with 0 weight are ignored
- Empty Grades: Rows with "-" grade don't count
- Goal Setting: Include remaining weight for accurate planning