Semester GPA accuracy and testing

Formula source

• GPA is a weighted average. It is calculated by: 1. Converting each letter grade to points (A=4.0, B=3.0, etc.). 2. Multiplying the grade points by the class credits (Quality Points). 3. Summing all Quality Points. 4. Dividing by the total number of credits attempted.

Test cases

Known limitations

• This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
• Use the result as a planning estimate unless the calculator page states a stricter purpose.

Assumptions

• This calculator uses the standard unweighted 4.0 scale represented by the built-in grade options.
• Only classes with both a selected grade and positive credits are included in the average.
• Withdrawals, pass/fail courses, repeated-course replacement, and school-specific grade scales may change the official GPA.

Unit handling

• Class 1 Grade accepts one of the configured options.
• Class 1 Credits accepts numeric values.
• Class 2 Grade accepts one of the configured options.
• Class 2 Credits accepts numeric values.
• Class 3 Grade accepts one of the configured options.
• Class 3 Credits accepts numeric values.
• Class 4 Grade accepts one of the configured options.
• Class 4 Credits accepts numeric values.
• Class 5 Grade accepts one of the configured options.
• Class 5 Credits accepts numeric values.

Rounding rules

• Number displays use up to 2 decimal places in the calculator UI.

Version history

Change log