Grade Calculator
Convert a score to percentage, letter grade, and GPA equivalent.
The Grade Calculator converts your raw score into a percentage, letter grade, and 4.0 GPA equivalent. Simply enter your score and the maximum possible score to see your grade in multiple formats.
How It Works
The percentage is calculated as (score ÷ max score) × 100. The letter grade and GPA equivalent are then determined based on standard US grading scales.
Standard Grading Scale
- A (90-100%): 4.0 GPA — Excellent
- B (80-89%): 3.0 GPA — Good
- C (70-79%): 2.0 GPA — Satisfactory
- D (60-69%): 1.0 GPA — Below Average
- F (0-59%): 0.0 GPA — Failing
This calculator uses the most common US grading scale with +/- modifiers. Different institutions may use slightly different thresholds. It is helpful for students checking their standing and teachers computing final grades.
Frequently Asked Questions
What grading scale does this use?
It uses the standard US letter grade scale: A (90-100%), B (80-89%), C (70-79%), D (60-69%), F (below 60%), with +/- modifiers at the boundaries.
Can I enter a score higher than the max?
Yes, if extra credit is involved. A score of 105 out of 100 would yield 105%, which maps to an A+.
How is the GPA equivalent calculated?
The letter grade is mapped to the standard 4.0 scale: A=4.0, A-=3.7, B+=3.3, B=3.0, and so on down to F=0.0.