GPA Calculator
Add each course with its grade and credit hours to instantly calculate your semester GPA on a 4.0 scale.
How to use the GPA Calculator
For each course, enter the course name (optional, for your own reference), select the letter grade you received, and enter the credit hours for that course. Click "+ Add course" to add more rows, then click "Calculate GPA" to see your semester GPA on a standard 4.0 scale.
Grade to grade-point scale used
| Letter grade | Grade points |
|---|---|
| A / 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 | 1.0 |
| F | 0.0 |
How is GPA calculated?
GPA is a credit-weighted average: each course's grade points are multiplied by its credit hours, these are summed across all courses, and the total is divided by the sum of all credit hours. This means a 4-credit course affects your GPA more than a 1-credit course.
Frequently asked questions
Does this work for both semester and cumulative GPA?
Yes. Enter your courses for a single semester to get your semester GPA, or enter every course you've taken across all semesters to get your cumulative GPA (CGPA).
My university uses a different grading scale — can I still use this?
This calculator uses the standard US-style 4.0 scale. If your institution uses a different scale (such as a percentage-based or 4.3 scale), the grade points here may not exactly match your official transcript — always confirm with your university's grading policy for official purposes.
Is my data stored anywhere?
No. This tool is part of the Toolyard collection of free, browser-based utilities. All calculations run locally in your browser — nothing you enter is uploaded to a server or stored anywhere.
Why GPA scales differ between schools
Most US institutions use a 4.0 scale where an A equals 4.0, but the exact conversion for grades like A- or B+ varies by school — some use 3.7 for an A-, others use 3.75. Weighted GPA scales, common in high schools, award extra points for honors or AP-level courses, which is why a student's weighted GPA can exceed 4.0 even though the unweighted scale caps there. Always check which scale your specific school or program uses before comparing GPAs across institutions.
Semester GPA versus cumulative GPA
Semester GPA reflects only the courses taken in that term, while cumulative GPA is a running average across every term, weighted by each course's credit hours — a 3-credit class affects your cumulative GPA more than a 1-credit class. This is why a single strong or weak semester has a smaller effect on cumulative GPA the further along you are in a program; early grades carry more relative weight than most students realize.
Common uses
Students checking eligibility for scholarships or honor societies that specify a minimum GPA, planning how a target grade in an upcoming course would affect their overall average, and calculating cumulative GPA when transferring credits between institutions with different grading scales are typical reasons to run these numbers.