Grading scales: percentage to letter grade

The two most common US scales, with the GPA points for each letter. Your school's own scale is the one that counts.

A+ to F (plus and minus)

LetterPercentageGPA points
A+97% to 100%4.0
A93% to 96.99%4.0
A-90% to 92.99%3.7
B+87% to 89.99%3.3
B83% to 86.99%3.0
B-80% to 82.99%2.7
C+77% to 79.99%2.3
C73% to 76.99%2.0
C-70% to 72.99%1.7
D+67% to 69.99%1.3
D63% to 66.99%1.0
D-60% to 62.99%0.7
FBelow 60%0.0

A to F (90 / 80 / 70 / 60)

LetterPercentageGPA points
A90% to 100%4.0
B80% to 89.99%3.0
C70% to 79.99%2.0
D60% to 69.99%1.0
FBelow 60%0

Why your school's scale might differ

  • Different cutoffs. Some schools use a 7-point scale (93 for an A, 85 for a B, 77 for a C, 70 for a D).
  • Rounding. Some gradebooks round 89.5% up to 90%, and some never round.
  • A+ and D-. Some schools don't give an A+ or a D-, and some count an A+ as 4.3.

Every calculator on this site lets you switch between the two scales above, or choose My own scale and enter your school's cutoffs for an A, B, C and D. For example, the 7-point scale is 93, 85, 77 and 70. Your scale is saved in your browser and used on every calculator here.