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GPA Letter Grade Chart: The 4.0 Scale Explained

Published October 3, 2026Written and reviewed by Mateuss M.

GPA Letter Grade Chart: The 4.0 Scale Explained — illustration
In short: On the common 4.0 scale an A is 4.0, a B is 3.0 and a C is 2.0. Three credits of A and three of B average to GPA 3.5.

The chart

LetterGrade points
A+4.0
A4.0
A−3.7
B+3.3
B3.0
B−2.7
C+2.3
C2.0
C−1.7
D+1.3
D1.0
D−0.7
F0.0
Schools differ: some give A+ 4.3, some skip plus/minus, and percentage ranges vary. Check your own policy.

How credits weight grades

Multiply each grade-point value by the course credits, add them up, and divide by total credits. A 4-credit course moves your GPA more than a 1-credit course.

Four courses, different credits
AnswerGPA 3.36
  • 12 credits
  • 40.3 quality points
Step-by-step working 3 steps
  1. 1
    Convert each grade to grade points (4.0 scale)
    A (4.0) × 3 credits = 12
B+ (3.3) × 4 credits = 13.2
A- (3.7) × 3 credits = 11.1
C (2.0) × 2 credits = 4

    Scale used: A/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, F 0. Schools differ — check yours.

  2. 2
    Add quality points and credits
    Quality points = 40.3
Credits = 12
  3. 3
    GPA = quality points ÷ credits
    40.3 ÷ 12 = 3.3583

Planning a target

Use the GPA calculator to test “what if” grades, and the weighted grade calculator for the score needed on a final. Method: how to calculate GPA.

Frequently asked questions

What GPA is a B average?

About 3.0 on the standard 4.0 scale.

Are weighted and unweighted GPA different?

Yes. Weighted GPAs add extra points for honours or AP/IB courses; unweighted use the plain scale above.

Written and reviewed by Mateuss M.

Mateuss M. writes and reviews mathematical content for CalcSolver, focusing on online calculators, formulas, equations, and practical math tools. He reviews calculator functionality, calculation methods, formulas, examples, and explanations to help ensure that each tool is clear, useful, and easy to understand.

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