USA · Plus/Minus Scale

Louisiana State University
GPA Calculator

Calculate your LSU GPA and convert it to percentage using the official plus/minus grading scale used on your LSU transcript.

Tool 1

LSU GPA Calculator

Add each course with its letter grade and credit hours. Calculation uses LSU's official quality-point values.

Add Your Courses

LSU uses a plus/minus scale where A+ = 4.3 quality points per hour.

The Math

How LSU GPA Is Calculated

LSU multiplies each grade point by credit hours to get quality points, then divides total quality points by hours attempted.

LSU GPA Formula
\[ \text{GPA} = \frac{\displaystyle\sum \text{Quality Points}}{\displaystyle\sum \text{Hours Attempted}} = \frac{\displaystyle\sum (\text{Grade Point} \times \text{Credit Hours})}{\displaystyle\sum \text{Credit Hours}} \]
Quality PointsGrade point value × credit hours for each course
Hours AttemptedTotal graded credit hours (excludes P, S, U, W, I, etc.)

📝 Worked Example

The official LSU plus/minus example across four courses:

CourseGradeHours AttemptedGrade PointQuality Points
Course 1B+43.34 × 3.3 = 13.2
Course 2C22.02 × 2.0 = 4.0
Course 3C−31.73 × 1.7 = 5.1
Course 4A−33.73 × 3.7 = 11.1
Total—12—33.4

Plugging into the formula:

\[ \text{GPA} = \frac{33.4}{12} \approx \mathbf{2.78} \]
Tool 2

LSU GPA to Percentage Converter

Convert your LSU GPA to an equivalent percentage instantly.

Convert GPA → Percentage

Enter any LSU GPA between 0.0 and 4.3.

The Conversion Formula

LSU does not publish an official GPA-to-percentage formula. The widely used approximation on the 4.0 scale is:

\[ \text{Percentage} = \left(\frac{\text{GPA}}{4.0}\right) \times 100 \]

Example: If your GPA is 3.5, then Percentage = (3.5 ÷ 4.0) × 100 = 87.50%.

Reference

Official LSU Grading Scale

Quality-point values used to compute semester and cumulative GPA, sourced from the LSU Office of the University Registrar.

📘 LSU Plus/Minus Quality Points (Fall 2015 & after)

Note: The grade F has no plus or minus. Grades earned before Fall 2015 used the A–F whole-number scale.

Letter GradeQuality PointsDefinition
A+4.3Distinguished mastery
A4.0Distinguished mastery
A−3.7Distinguished mastery
B+3.3Good mastery
B3.0Good mastery
B−2.7Good mastery
C+2.3Acceptable mastery
C2.0Acceptable mastery
C−1.7Acceptable mastery
D+1.3Minimally acceptable
D1.0Minimally acceptable
D−0.7Minimally acceptable
F0.0Failure

📌 Grades Excluded from GPA

The following marks carry no quality points and are not counted in hours attempted: P (Pass), S (Satisfactory), U (Unsatisfactory), W (Withdrawal), I (Incomplete), and Credit/No-Credit grades.

For TOPS reporting, LOSFA does not accept plus/minus grades — so an A+ is reported to the state as an A.

Got Questions?

LSU GPA — Frequently Asked Questions

What GPA scale does Louisiana State University use?

Since Fall 2015, LSU uses a plus/minus scale: A+ = 4.3, 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. The F grade has no plus or minus.

Is A+ worth 4.3 at LSU?

Yes — on the LSU transcript an A+ earns 4.3 quality points per credit hour. However, for TOPS purposes LOSFA does not accept plus/minus grades, so an A+ is reported to the state as an A.

How is my LSU GPA calculated?

Your GPA equals total quality points ÷ total hours attempted. Quality points for a course are the grade-point value multiplied by the credit hours of that course.

How do I convert my LSU GPA to a percentage?

LSU has no official conversion. A common approximation is Percentage = (GPA ÷ 4.0) × 100. For example, a GPA of 3.5 converts to about 87.5%.

Which grades are left out of my LSU GPA?

Marks of P, S, U, W, I, and Credit/No-Credit carry no quality points and are excluded from both quality points and hours attempted, so they don't affect your GPA.

Reference: All grading data verified against the LSU Office of the University Registrar — Plus/Minus Grades.