Official Grading Scales & Cutoffs
Grade Scales & Conversions
The definitive reference for standard US grading scales. Convert between percentages, letter grades (A+ through F), and quality points for standard, honors, and AP coursework.
Standard US Letter Grades Directory
A+Excellent
97% – 100%
4.0 GPA: 4.0 • AP: 5.0
Explore A+ Grade →
AExcellent
93% – 96.99%
4.0 GPA: 4.0 • AP: 5.0
Explore A Grade →
A-Excellent
90% – 92.99%
4.0 GPA: 3.7 • AP: 4.7
Explore A- Grade →
B+Good
87% – 89.99%
4.0 GPA: 3.3 • AP: 4.3
Explore B+ Grade →
BGood
83% – 86.99%
4.0 GPA: 3.0 • AP: 4.0
Explore B Grade →
B-Good
80% – 82.99%
4.0 GPA: 2.7 • AP: 3.7
Explore B- Grade →
C+Satisfactory
77% – 79.99%
4.0 GPA: 2.3 • AP: 3.3
Explore C+ Grade →
CSatisfactory
73% – 76.99%
4.0 GPA: 2.0 • AP: 3.0
Explore C Grade →
C-Satisfactory
70% – 72.99%
4.0 GPA: 1.7 • AP: 2.7
Explore C- Grade →
D+Poor
67% – 69.99%
4.0 GPA: 1.3 • AP: 2.3
Explore D+ Grade →
DPoor
60% – 66.99%
4.0 GPA: 1.0 • AP: 2.0
Explore D Grade →
FFailing
0% – 59.99%
4.0 GPA: 0.0 • AP: 0.0
Explore F Grade →
Grade Conversion Tools
Letter Grade Chart
Complete reference table showing letter grades, percent cutoffs, and GPA points.
Percentage Grade Chart
Official grading scale chart translating percentages to letter marks.
Percentage to Letter Grade
Map any numerical percent to A+, A, B, C, D, F.
Letter Grade to Percentage
Find typical syllabus percent thresholds for each letter grade.
Percentage to GPA
Convert test score percentage directly to 4.0 quality points.
GPA to Percentage
Convert 4.0 GPA back into approximate percentage averages.
Points to Percentage
Convert points earned / possible to decimal percent.
Points to Letter Grade
Translate raw assignment points to standard letter marks.