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GradeCalc.US

GPA Converter

Convert between percentages, letter grades and GPA on the 4.0 scale, or turn a weighted high school GPA into an unweighted one. Results update as you type.

  • Live results
  • U.S. grading scale
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Percentage → GPA

%
?

Type a class percentage, like 88.

GPA → letter grade and percentage

?

Type a GPA, like 3.4.

Weighted GPA → unweighted GPA

For schools that add +0.5 for Honors and +1.0 for AP/IB, with classes worth the same credit.

Enter your weighted GPA, how many classes you've taken, and how many were Honors and AP/IB.

Percentage to GPA conversion chart

Most U.S. high schools and colleges convert grades to GPA with this 4.0 scale:

PercentageLetter gradeGPA (4.0 scale)
93–100%A4.0
90–92%A-3.7
87–89%B+3.3
83–86%B3.0
80–82%B-2.7
77–79%C+2.3
73–76%C2.0
70–72%C-1.7
67–69%D+1.3
63–66%D1.0
60–62%D-0.7
Below 60%F0.0

Your school may use a different scale, such as a 10-point scale (90–100% is an A) or one without plus and minus grades. The grading scale page covers the common variations.

Why a GPA can't be converted with one formula

GPA is an average of letter-grade points, not of percentages. Two students with the same 85% average can have different GPAs: one with every class at 85% (all B's, 3.0), another with a mix of 95% and 75% (A's and C's, also 3.0) or 89% and 81% (B+ and B-, 3.0). The steps between letters are what count, so convert each class and then average by credits, as the GPA calculator does.

Converting weighted and unweighted GPA

A weighted GPA adds a bonus for harder classes, usually 0.5 for Honors and 1.0 for AP, IB or dual enrollment. Taking the bonus out gives the unweighted GPA:

Unweighted GPA = Weighted GPA − (0.5 × Honors + 1.0 × AP/IB) ÷ total classes

Worked example

A senior with 24 classes

Weighted GPA 4.10, with 4 Honors classes and 6 AP classes.

4.10 − (0.5 × 4 + 1.0 × 6) ÷ 24 = 4.10 − 8 ÷ 24 = 4.10 − 0.33 = 3.77 unweighted.

This assumes every class has the same credit and that no weighted class was failed (an F usually gets no bonus). To go the other way, from unweighted to weighted, enter your classes in the high school GPA calculator and mark each one as Regular, Honors or AP/IB.

Frequently asked questions

How do I convert a percentage to a 4.0 GPA?

Find the letter grade for the percentage, then use its grade points: 93% and up is 4.0, 90–92% is 3.7, 87–89% is 3.3, 83–86% is 3.0, and so on. For several classes, convert each class first and then average them by credits.

Can I convert my overall percentage average straight to GPA?

Only as a rough guide. GPA is built class by class, so an 85% average could be a 3.0 or a 3.2 depending on how the individual grades fall. For an accurate GPA, convert each class's grade and use a GPA calculator.

How do I convert a weighted GPA to unweighted?

Subtract the bonus points. If every class has the same credit, unweighted GPA = weighted GPA − (0.5 × Honors classes + 1.0 × AP/IB classes) ÷ total classes. The converter above does this. If credits differ, recalculate each class without the bonus instead.

How do I convert a 5.0 scale GPA to a 4.0 scale?

There's no exact shortcut. On most 5.0 scales the extra point is an AP or Honors bonus, so you need to remove the bonus rather than multiply by 4/5. Scaling a 4.5 down gives 3.6, but the real unweighted GPA could be anywhere from about 3.5 to 4.0 depending on the classes.

What percentage is a 3.0 GPA?

A 3.0 is a B average, about 83–86% on the standard U.S. scale. A 3.5 sits between a B+ and an A-, roughly 88–90%, and a 2.0 is a C, about 73–76%.

Do colleges convert GPAs themselves?

Many do. Admissions offices often recalculate high school GPAs on their own scale, and application services such as those for law and medical school use their own conversion rules, so treat any converted GPA as an estimate.

Last reviewed by Muhammad Shahid. See how we calculate.