How to Calculate Percentage from Grades: Simple Methods

Whether you have a letter grade, a fraction, or points out of a total, converting to a percentage follows the same principle.

From Points to Percentage

Percentage = (Score ÷ Total) × 100

From Letter Grade to Percentage

• A+ = 97–100%, A = 93–96%, A− = 90–92%
• B+ = 87–89%, B = 83–86%, B− = 80–82%
• C+ = 77–79%, C = 73–76%, C− = 70–72%
• D+ = 67–69%, D = 63–66%, D− = 60–62%
• F = Below 60%

GPA Conversion

The standard 4.0 GPA scale maps to percentages approximately as:

GPA = (Percentage - 55) ÷ 10  (approximate)