Free GPA Calculator Online — 4.0 Scale | Microapp
Calculate your GPA from course grades and credit hours instantly.
Use this free GPA calculator to compute your Grade Point Average from any combination of letter grades and credit hours. Supports the 4.0 scale used by most US colleges and universities.
How GPA Is Calculated — and What Counts as a Good GPA
Grade Point Average (GPA) is a standardized way of measuring academic performance on a 4.0 scale. It is calculated as the weighted average of your grade points, where each course's grade is multiplied by its credit hours. Courses worth more credits have a proportionally larger impact on your GPA. Most US universities use the 4.0 scale, though some use a 5.0 scale for weighted or honors courses.
Worked Example
A student takes four courses: English (3 credits, A = 4.0), Math (4 credits, B+ = 3.3), History (3 credits, A− = 3.7), Chemistry (4 credits, C+ = 2.3). Quality points: (3×4.0) + (4×3.3) + (3×3.7) + (4×2.3) = 12 + 13.2 + 11.1 + 9.2 = 45.5. Total credits: 3+4+3+4 = 14. GPA = 45.5 ÷ 14 = 3.25.
Standard Letter Grade to GPA Conversion (4.0 Scale)
| Letter Grade | Percentage | GPA 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 |
| D | 60–69% | 1.0 |
| F | Below 60% | 0.0 |
How GPA is calculated
GPA (Grade Point Average) is the weighted average of your grade points across all courses. Each letter grade maps to a point value (e.g. A = 4.0), which is multiplied by the course's credit hours. The sum of all (grade points × credits) is divided by the total credits attempted: GPA = Σ(grade points × credits) ÷ Σ(credits).
Worked example: English (A, 3 credits) + Math (B+, 4 credits) + History (A−, 3 credits) = (4.0×3) + (3.3×4) + (3.7×3) = 12 + 13.2 + 11.1 = 36.3 ÷ 10 = GPA 3.63.
| Letter Grade | 4.0 Scale | Typical % |
|---|---|---|
| A | 4.0 | 93–100 |
| 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 |
| D | 1.0 | 60–69 |
| F | 0.0 | Below 60 |
How to use this tool
- 1Select a letter grade for each course.
- 2Set the number of credit hours.
- 3Click Add Course to add more rows.
- 4Your cumulative GPA updates automatically.
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