GPA Calculator
Your Grade Point Average (GPA) is the weighted average of your letter grades, where each grade counts in proportion to the course's credit hours. This calculator uses the standard 4.0 scale (with an optional 4.3 scale that includes A+) and updates the result instantly as you type.
- Course 1
- Course 2
Semester GPA
Enter a valid letter grade and credit hours for at least one course.
Uses the standard 4.0 scale (A = 4.0, A− = 3.7, …). Maximum possible GPA: 4.
How it works
- Add one row per course, using the “Add course” button.
- Enter the course name (optional but helpful), credit hours, and the letter grade you received.
- Each grade is converted to grade points using the selected scale (A = 4.0 on the 4.0 scale).
- Grade points are multiplied by credit hours, summed, then divided by total credit hours.
- The result — GPA, total credits and grade points — appears instantly alongside a plain-language interpretation.
The formula
GPA formula
GPA = Σ (grade points × credit hours) ÷ Σ credit hours
Every course contributes its grade points multiplied by its credit weight. Dividing by total credits keeps heavier courses more influential.
Grade points (4.0 scale)
A = 4.0 · A− = 3.7 · B+ = 3.3 · B = 3.0 · B− = 2.7 · C+ = 2.3 · C = 2.0 · C− = 1.7 · D+ = 1.3 · D = 1.0 · F = 0
The most common scale in the US and many international universities. The 4.3 scale adds A+ = 4.3.
Worked example
Worked example — one semester, three courses
- Calculus I: 4 credits, grade A → 4.0 × 4 = 16.0 points
- Physics I: 3 credits, grade B+ → 3.3 × 3 = 9.9 points
- English: 2 credits, grade A− → 3.7 × 2 = 7.4 points
- Total points = 16.0 + 9.9 + 7.4 = 33.3; total credits = 4 + 3 + 2 = 9
GPA = 33.3 ÷ 9 = 3.70 — a strong semester (A− average).
Common mistakes
- Averaging letter grades as numbers without credit weighting — a 1-credit elective should never move your GPA as much as a 4-credit core course.
- Using the wrong scale — some universities use A+ = 4.3; picking the wrong scale shifts every course.
- Forgetting +/- grades — an A− (3.7) is not an A (4.0).
- Entering zero credit hours — every course must have credits greater than zero.
Frequently asked questions
What is a good GPA?
In the US system, 3.0 is typically “good” (B average), 3.5+ is strong enough for most graduate programs, and 3.7+ is excellent. Requirements vary by program and country — check your university's policy.
Does this calculator use a 4.0 or 4.3 scale?
It defaults to the standard 4.0 scale and includes a 4.3 option (adds A+ = 4.3), which is common at institutions that award A+ grades.
How is GPA different from CGPA?
GPA usually refers to a single term's average, while CGPA (cumulative GPA) averages across all completed terms. Use our CGPA calculator to combine semesters.
Can I include courses I failed?
Yes — an F contributes 0 grade points but still consumes credit hours, which is exactly how most universities treat it. Keep failed courses in the list for an accurate GPA.
What if my university uses a percentage system?
Convert each percentage to a letter grade using your university's scale first, then enter the letters here. Our grade calculator can help you find the letter for a percentage.
Related tools
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CGPA Calculator
Calculate your cumulative GPA (CGPA) by combining previous semesters with your current courses. See exactly how this term moves your overall average.
Weighted Grade Calculator
Calculate your grade when course components have different weights — homework 20%, midterm 30%, final 50%. Enter scores and weights, get your weighted average.
Semester GPA Planner
Plan your target CGPA. Tell us where you are, where you want to be, and how many credits remain — get the exact GPA needed.