This GPA calculator computes a credit-weighted grade point average for up to four courses on a 4.0, 5.0, or percentage scale. It is useful for checking a term average and understanding how credit hours influence the result.
How to use this calculator
Select the scale your institution uses, then enter each course's numeric grade points and credit hours. On a 4.0 scale, for example, an A might map to 4.0 and an A− to 3.7, but institutions define their own conversions.
Formula & calculation method
GPA = Σ(grade points × credit hours) / Σcredit hoursCourses with more credits contribute proportionally more to the weighted average. The calculator validates that grades fit the selected scale and that total credits are positive. It does not convert letter grades automatically.
Worked example
A 4-credit course affects GPA twice as much as a 2-credit course with the same grade. Averaging only the grade numbers without credits would produce a different and usually incorrect institutional result.
Why this is useful
The layout supports quick term calculations and scenario checks before official grades are posted. Weighted output and total credits are shown together, making the calculation transparent and easy to verify against a transcript.
Limitations to keep in mind
Institutions differ in plus/minus grades, repeated-course rules, pass/fail treatment, rounding, and whether a course counts toward GPA. Use the registrar's official scale and rules for academic decisions.
Frequently asked questions
Why does GPA use credit hours?
Credit hours represent course weight. A course with more credits should generally have a larger effect on the average.
Can I enter letter grades?
No. Convert letters to numeric grade points using your institution's published scale before entering them.
Is the result an official transcript GPA?
No. It is an estimate from the courses entered and may differ because of institutional policies or additional coursework.