Grade Calculator | Free GPA & Final Grade Tool
Calculate weighted course grades, cumulative GPA on 4.0/4.3/5.0 scales, weighted GPA with AP/Honors/IB difficulty multipliers, CGPA 10.0 scale conversion, and what-if final exam analysis. Includes GPA projection (predict your future GPA from planned courses), percentage-to-GPA/CGPA conversion, pass/fail course support, and a complete letter grade reference scale.
📖 Want to understand your results?
Read our complete guide to the Grade & GPA Calculator — with real-world examples, expert insights, and pro tips.
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How to Use the Grade Calculator
Weighted Grade Calculator
Add assignments, quizzes, midterms, and finals with their scores, max points, and weight percentages. Get your overall grade, letter grade, GPA, and per-assignment contribution %.
GPA Calculator (4.0 & 5.0)
Add courses with letter grades, difficulty levels (Regular/Honors/AP/IB/Dual), and credit hours. Toggle weighted mode for 5.0 GPA with AP/Honors multipliers. Shows both unweighted and weighted GPA plus quality points.
What-If Analysis
Enter your current grade, target grade, and exam weight to see exactly what score you need to reach your goal. Shows if it's achievable or impossible.
GPA Projection & Predictor
Enter your current GPA and completed credits, then add planned courses with expected grades to predict your future GPA. Set a target to see if you'll meet it.
Scale Converter (4.0 ↔ 5.0 ↔ 10.0)
Convert between percentage, GPA (4.0/5.0), and CGPA (10.0) scales. Includes a complete letter grade reference and CGPA quick reference table.
Standard 4.0 Grading Scale
Common letter grades with their GPA values and minimum percentage thresholds.
| Letter Grade | GPA (4.0 Scale) | Percentage Range |
|---|---|---|
| A+ | 4.0 | 97-100% |
| A | 4.0 | 93-96% |
| A- | 3.7 | 90-92% |
| B+ | 3.3 | 87-89% |
| B | 3.0 | 83-86% |
| B- | 2.7 | 80-82% |
| C+ | 2.3 | 77-79% |
| C | 2.0 | 73-76% |
| C- | 1.7 | 70-72% |
| D+ | 1.3 | 67-69% |
| D | 1.0 | 63-66% |
| D- | 0.7 | 60-62% |
| F | 0.0 | 0-59% |
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How GPA is Calculated
Weighted Grade Calculation
- Each assignment has a score (points earned) and max (points possible)
- Grade % = (Score ÷ Max) × 100
- Weighted contribution = Grade % × (Weight ÷ Total Weight)
- Final grade = Sum of all weighted contributions
Homework: 85/100 (20%) + Midterm: 78/100 (30%) + Final: 92/100 (50%) = Overall: 87.4% (B+)
GPA Calculation
- Each course has a letter grade converted to GPA points (A=4.0, B=3.0, etc.)
- Quality points = GPA × Credit hours
- Total quality points ÷ Total credit hours = Cumulative GPA
- A 4.0 GPA requires all A grades across all courses
Math: A (4 cr), English: B+ (3 cr), Science: B (4 cr) = GPA: 3.28 (B)
What-If Final Exam Score
- Current grade contributes (100% - Exam Weight) toward final grade
- Exam score contributes Exam Weight toward final grade
- Target = (Current × Current Weight) + (Needed × Exam Weight)
- Needed = (Target - Current × Current Weight) ÷ Exam Weight
Current: 82% (80% weight), Target: 90%, Final weight: 20% → Need: 122% (impossible!)
Reviewed by Emily Watson, M.Ed.
Mathematics EducatorMathematics teacher and curriculum designer with 15+ years of experience.
Grade Calculator Pros & Cons
Pros
- ✅ Multiple grade calculation modes
- ✅ What-if final exam score analysis
- ✅ Visual GPA scale reference
- ✅ Free forever — no subscriptions
- ✅ Works offline after page load
Cons
- ✗ No weighted assignment tracking
- ✗ No semester-long grade projection
Frequently Asked Questions
How is a weighted grade calculated?
A weighted grade is calculated by multiplying each assignment grade by its weight, then dividing by the total weight. Example: Homework 20% (85), Midterm 30% (78), Final 50% (92) = (85×20 + 78×30 + 92×50) ÷ 100 = 87.4%.
What is a GPA?
GPA stands for Grade Point Average. Each letter grade corresponds to a point value (A=4.0, B=3.0, etc.). Your GPA is calculated by dividing total quality points by total credit hours attempted.
What is a good GPA?
3.5-4.0 is excellent for competitive colleges, 3.0-3.4 is solid for most universities, 2.5-2.9 may limit options at selective schools, below 2.5 may require academic improvement.
How do I calculate what I need on my final exam?
Needed Score = (Target Grade - (Current Grade × (100% - Exam Weight))) ÷ Exam Weight. Example: 82% current, want 90%, final worth 20%: (90 - (82 × 0.80)) ÷ 0.20 = 122% — impossible.
What is the difference between weighted and unweighted GPA?
Unweighted GPA treats all courses equally (A=4.0). Weighted GPA gives extra points for honors/AP/IB courses (A in AP = 5.0). Our calculator supports both scales.
How do I convert a percentage to a GPA?
93%+ = 4.0 (A), 90-92% = 3.7 (A-), 87-89% = 3.3 (B+), 83-86% = 3.0 (B), and so on. See our grading scale reference table for all conversions.
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