Percentage to GPA - Convert Percent to Letter Grade & 4.0

Letter	GPA	Percentage	Honors	AP/IB
A+	4.0	97–100%	4.5	5.0
A	4.0	93–96%	4.5	5.0
A-	3.7	90–92%	4.2	4.7
B+	3.3	87–89%	3.8	4.3
B	3.0	83–86%	3.5	4.0
B-	2.7	80–82%	3.2	3.7
C+	2.3	77–79%	2.8	3.3
C	2.0	73–76%	2.5	3.0
C-	1.7	70–72%	2.2	2.7
D+	1.3	67–69%	1.8	2.3
D	1.0	63–66%	1.5	2.0
D-	0.7	60–62%	1.2	1.7
F	0.0	0–59%	0.5	1.0

Price	100% free, no sign-up
Input	Any percentage from 0 to 100
Output	Letter grade and 4.0 grade points
Processing	Runs locally in your browser

What is Percentage to GPA?

Converting a percentage to GPA means placing the score in a letter band and reading the grade points for that letter. On the common US scale the bands run in three-point steps: 93–96% is an A (4.0), 90–92% an A- (3.7), 87–89% a B+ (3.3), and so on down to 60–62% for a D- worth 0.7. Two things trip people up. First, the boundaries are conventions rather than arithmetic, so a school may put the A floor at 90% instead of 93%. Second, a single percentage only converts to a single course's grade points — the GPA itself is the credit-weighted average of all those points, which is a separate calculation.

Common Uses for Percentage to GPA

Work out the letter grade behind a percentage score
Convert a syllabus percentage into the points it will add to your GPA
Check whether a 89.5% counts as a B+ or an A- at a given school
Translate an international percentage grade into a US figure

Why 90% is often not a 4.0

The standard scale reserves 4.0 for 93% and above, so a 90% average is an A- and 3.7. Students who assume 90% is perfect are usually comparing against a school that sets its A floor at 90 — both conventions exist, and knowing which one your school uses changes the number by 0.3 points per course.

From one percentage to a GPA

Converting a single score gives you one course's points. The GPA needs the full picture: convert each course, multiply by its credits, add and divide. That two-step process — convert, then weight — is exactly what the GPA calculator automates, and doing it by hand once makes the credit weighting intuitive.

Frequently Asked Questions

What percentage is a 3.0 GPA?

83–86%, the B band. Because 3.0 is exactly a B, any average that lands in that band is a 3.0 GPA before credit weighting.

Is 80% a 3.0?

No. 80–82% is a B-, worth 2.7. The B band starts at 83%. This is one of the most common conversion mistakes.

What GPA is 90%?

3.7 — 90–92% is an A-, not an A. The A band begins at 93% on the standard scale, which is why an average of exactly 90% usually reads as 3.7.

Do all schools use the same bands?

No, and the differences cluster near the boundaries. The letter-to-points values are far more consistent than the percentage bands, so when in doubt convert the letter and trust the points.