Semester GPA Calculator
Your semester GPA is a credit-weighted average of the grade points you earned in each course, not a simple average of letter grades. This calculator takes up to five courses, each with its grade points on the 4.0 scale and its credit hours, and returns the semester GPA along with total quality points and total credits. Enter the grade points your school assigns (for example 4.0 for an A, 3.3 for a B-plus), and adjust any course to instantly see how it moves your GPA. The math matches how a registrar computes the official figure.
Semester GPA formula
Quality points (course) = grade points * credits
Total quality points = sum over all courses
Total credits = sum of credits
GPA = total quality points / total credits
Percent of 4.0 = GPA / 4 * 100
Leave a course's credits at zero to exclude it. The GPA is the total quality points divided by total credits, exactly the credit-weighted average registrars use.
Standard 4.0 grade points
- A is 4.0, A-minus 3.7, B-plus 3.3, B 3.0, B-minus 2.7.
- C-plus 2.3, C 2.0, C-minus 1.7, D 1.0, F 0.0.
- Some institutions cap A-plus at 4.0; others use different increments.
- Pass-fail courses are usually excluded from GPA; check your policy.
- Higher-credit courses move your GPA more than low-credit ones.
Semester GPA: frequently asked questions
How is semester GPA calculated?
GPA is a credit-weighted average. Multiply each course's grade points by its credit hours to get quality points, sum the quality points across all courses, then divide by the total credit hours. A 3-credit A (4.0) and a 1-credit C (2.0) give (12 + 2) divided by 4, which is 3.5.
What are the grade point values?
On the standard US 4.0 scale, A equals 4.0, A-minus 3.7, B-plus 3.3, B 3.0, B-minus 2.7, C-plus 2.3, C 2.0, C-minus 1.7, D 1.0, and F 0.0. Some schools differ slightly, so enter the grade points your institution uses for each course.
Why are credit hours weighted?
A 4-credit course contributes more to your GPA than a 1-credit course because it represents more of your academic load. Weighting by credits ensures harder, longer courses count proportionally, which is how registrars compute the official figure.
Does this match my official transcript GPA?
If you enter the same grade points and credit hours your institution records, yes. Differences arise only when a school uses a non-standard scale, plus-minus variations, or excludes pass-fail courses. Always check your registrar's published policy.
How can I raise my GPA?
Because GPA is credit-weighted, improving grades in high-credit courses moves it most. Use the calculator to test scenarios: change a course's grade points and watch the semester GPA update so you can prioritize where effort pays off.
Official sources
- U.S. Department of Education: National Center for Education Statistics.
- U.S. Department of Education: postsecondary grading information.
Reviewed by the CalculatorHub team, edited by James Graham, 16 June 2026. See our methodology.