Common US 4.0 GPA Scale | GradeCalculator

The common US 4.0 GPA scale is widely used in American high schools and colleges. Letter grades map to percentage ranges, and each letter converts to GPA points for semester calculations. Percentage cutoffs vary by school, district, college, and instructor — verify your institution's grading policy.

Letter / Grade	Percentage	GPA Points
A+	97–100%	4
A	93–96%	4
A-	90–92%	3.7
B+	87–89%	3.3
B	83–86%	3
B-	80–82%	2.7
C+	77–79%	2.3
C	73–76%	2
C-	70–72%	1.7
D+	67–69%	1.3
D	63–66%	1
D-	60–62%	0.7
F	0–59%	0

Important notes

Many schools use plus/minus modifiers (A-, B+, etc.) with the ranges shown below.
NCES standardizes transcript study with A=4, B=3, C=2, D=1, and F=0 on a four-point framework; it does not define one national plus/minus percentage table.
Some high schools use a 10-point scale (90–100 = A) — see US 10-point letter bands in our calculator settings.
Weighted GPA (honors/AP) may add extra points beyond this table.

Sources

Common US collegiate example (percentage bands vary by institution)
NCES four-point framework (A=4…F=0) — not a single national percent-to-letter table

Other grading scales

Letter / Grade	Percentage	GPA Points
A+	97–100%	4
A	93–96%	4
A-	90–92%	3.7
B+	87–89%	3.3
B	83–86%	3
B-	80–82%	2.7
C+	77–79%	2.3
C	73–76%	2
C-	70–72%	1.7
D+	67–69%	1.3
D	63–66%	1
D-	60–62%	0.7
F	0–59%	0

Important notes

Many schools use plus/minus modifiers (A-, B+, etc.) with the ranges shown below.
NCES standardizes transcript study with A=4, B=3, C=2, D=1, and F=0 on a four-point framework; it does not define one national plus/minus percentage table.
Some high schools use a 10-point scale (90–100 = A) — see US 10-point letter bands in our calculator settings.
Weighted GPA (honors/AP) may add extra points beyond this table.

Sources

Common US collegiate example (percentage bands vary by institution)
NCES four-point framework (A=4…F=0) — not a single national percent-to-letter table