4.0 Scale Grade Calculator

The 4.0 scale is the most common grading system used in US colleges and universities. It converts letter grades to a numerical scale where A = 4.0, B = 3.0, and so on. This calculator helps you convert your grades to the 4.0 scale and calculate your GPA.

How to Use This Calculator

Using the 4.0 scale grade calculator is simple:

Enter the number of credits for each course.
Select the letter grade you received for each course.
Click "Calculate" to see your GPA on the 4.0 scale.

The calculator will show your GPA and provide an explanation of how it was calculated.

How the 4.0 Scale Works

The 4.0 scale is a weighted grading system where each letter grade is assigned a numerical value:

Letter Grade	4.0 Scale Value
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
F	0.0

To calculate your GPA, multiply each course's grade value by its credit hours, sum these products, and divide by the total credit hours.

GPA Calculation Formula

GPA = (Σ (Grade Value × Credit Hours)) / Σ Credit Hours

For example, if you took a 3-credit course with a B (3.0) and a 4-credit course with an A (4.0), your GPA would be:

Example Calculation

(3.0 × 3) + (4.0 × 4) = 9 + 16 = 25

Total credit hours = 3 + 4 = 7

GPA = 25 / 7 ≈ 3.57

Worked Examples

Example 1: Single Course

If you took a 3-credit course and received a B+, your GPA would be:

Calculation

Grade value for B+ = 3.3

GPA = (3.3 × 3) / 3 = 3.3

Example 2: Multiple Courses

If you took two courses:

4-credit course with a B (3.0)
3-credit course with an A- (3.7)

Your GPA would be:

Calculation

(3.0 × 4) + (3.7 × 3) = 12 + 11.1 = 23.1

Total credit hours = 4 + 3 = 7

GPA = 23.1 / 7 ≈ 3.30

Frequently Asked Questions

What is the difference between a 4.0 scale and a percentage grade?

The 4.0 scale is a weighted grading system where each letter grade is assigned a numerical value. Percentage grades are based on the percentage of points you earned in a course. The 4.0 scale is more commonly used for college GPAs.

How do I convert a percentage grade to a 4.0 scale?

You can use the 4.0 scale grade calculator to convert percentage grades to the 4.0 scale. Simply enter your percentage grade, and the calculator will show the equivalent 4.0 scale value.

What is a good GPA on the 4.0 scale?

A good GPA on the 4.0 scale is typically 3.0 or higher. A GPA of 3.5 or higher is considered excellent. The specific GPA requirements for colleges and universities vary, so be sure to check the requirements for the schools you're interested in.