GPA Calculator

What is GPA?

GPA, or grade point average, summarizes course performance on a grade-point scale. This calculator uses a common 4.0 convention and weights each course by its credit hours, so a higher-credit course contributes more to the result.

How GPA is calculated

Choose the letter grade for each course, enter its credit hours, and calculate. Each letter grade is mapped to grade points, those grade points are multiplied by course credits, and the resulting quality points are combined across all entered courses.

Credit-weighted GPA formula

Quality points = grade points × credit hours

GPA = total quality points ÷ total credit hours

Worked example

If a 3-credit course has an A (4.0), it contributes 12 quality points. A 4-credit course with a B+ (3.3) contributes 13.2 quality points. Together, 25.2 quality points divided by 7 credits gives a GPA of 3.6.

GPA vs. percentage grade

A percentage grade and a GPA are different scales. This tool does not convert percentages into letter grades because percentage-to-letter rules vary by school, program, and instructor. Enter the letter grade that your institution actually assigns.

Why credit hours matter

Credit weighting prevents a 1-credit course from having the same influence as a 4-credit course. If all entered courses carry the same number of credits, the calculation reduces to the arithmetic mean of their grade points.

4.0-scale limitations

The mapping used here is a common convention: A+ 4.0, 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, and F 0.0. It is not an official universal standard.

Institutional differences

Some institutions award more than 4.0 for an A+, use different plus/minus values, exclude repeated courses, treat pass/fail courses specially, or apply separate rules for weighted high-school GPA. Check your institution’s published policy before using the result for an official purpose.

Common mistakes

• Using percentage grades instead of assigned letter grades.
• Ignoring different credit hours.
• Assuming every 4.0 scale uses the same plus/minus mapping.
• Including courses that your institution excludes from GPA.

Frequently asked questions

Does A+ equal 4.0 here?

Yes. In this calculator A+ and A both map to 4.0.

Can credit hours be decimals?

Yes. Positive decimal credit values are accepted.

Is this an official GPA conversion?

No. It uses a clearly stated common 4.0 convention; institutional policies vary.

Can I include my previous cumulative GPA?

No. This version calculates GPA only from the individual courses entered here.