GPA Calculator

Calculate your semester GPA on the 4.0 scale from each course's grade points and credit hours.

gpa-calculator
Result
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In summary: GPA is the credit-weighted average of your grade points: GPA = Σ(grade points × credits) ÷ Σ(credits). An A (4.0, 3 cr), B+ (3.3, 3 cr) and A- (3.7, 4 cr) give a GPA of 3.67.

How GPA is calculated

Your GPA (grade point average) is a credit-weighted average. Multiply each course's grade points by its credit hours, add those up, and divide by total credits: GPA = Σ(points × credits) ÷ Σ(credits). A heavier course (more credits) pulls your GPA more.

Letter grade to grade points

Convert letters first: 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, D- = 0.7, F = 0.0. Enter the points value for each course along with its credits. To turn a percentage into points, use the letter grade calculator.

How to use this calculator

Enter grade points and credit hours for each course, leaving extra rows blank. The result is your GPA for the term. To roll it into your overall GPA, use the cumulative GPA calculator. If a term is still in progress, project it with the semester grade calculator.

Frequently asked questions

How do I calculate my GPA?
Multiply each course's grade points by its credits, add the totals, and divide by total credits. A=4.0, B=3.0, C=2.0, D=1.0, F=0.
What is a good GPA?
On a 4.0 scale, 3.5+ is generally considered strong, 3.0 is solid, and 2.0 is the common minimum to stay in good academic standing.
How do I convert letter grades to points?
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, D-=0.7, F=0.0.
Do credit hours matter?
Yes. GPA is credit-weighted, so a grade in a 4-credit course affects your GPA more than the same grade in a 1-credit course.
How much can one course change my GPA?
Roughly by its share of the term's credits. In a 15-credit term a 3-credit course carries one fifth of the weight, so moving it from a B to an A adds about 0.2 to the term GPA.
How this tool works

The formula behind this tool is written out in full in the sections above, so you can check the maths yourself. Every calculator on Calculorium is verified against worked examples with automated tests before it is published, and pages are reviewed as formulas or standards change. Nothing you type is sent anywhere — the calculation runs entirely in your browser. Read how we build and check these tools.

Last updated: July 27, 2026 · Calculations run in your browser. Estimates for information only.