GPA calculator
Grade point average from your courses.
About this calculator
List each course on its own line, with the letter grade and then the credits, such as A- 3.
This uses a common US 4.0 scale, on which A+ counts as 4.0. Schools vary, so check your school’s own scale. UK degree classifications work differently and are not covered.
How it works
Multiplies each grade's points by its credits, adds them up and divides by total credits. A+ counts as 4.0.
Worked example
- One course per line: grade, then credits: A 3; B+ 4; A- 3; C 2
GPA: 3.36 (on a 4.0 scale)
The story behind it
Where the idea came from: Early US colleges: Yale in 1785 and Mount Holyoke in 1897.
One of the earliest known US grading systems appeared at Yale in 1785, when its president Ezra Stiles ranked students in four Latin categories. Letter grades came later, and Mount Holyoke College is often credited with an A-to-E scale in 1897. Grade points let schools turn those letters into one number, which is what this calculator works out.
Why you can trust this calculator
- It runs in your browser. Nothing you type into it is sent anywhere.
- The method is explained on this page, so you can check it yourself.
- Free to use, with no sign-up.
- Results are estimates, so please double-check anything important.
- Spotted a mistake? Tell us and we'll look into it.
After 15 years as a mathematics educator, I built CalculStore to give students, teachers, professionals and anyone working with numbers simple, reliable tools.
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