Weighted vs Unweighted GPA: What's the Difference and Which Colleges Use

Unweighted GPA counts every class the same and maxes out at 4.0. Weighted GPA adds bonus points for honors, AP, IB or dual-enrollment classes, so it can climb above 4.0, often to about 5.0. Your school decides the bonus, and colleges frequently recalculate both numbers their own way. Below you’ll see the two GPAs computed on the same schedule, how schools set their weights, and what two large universities actually do with your transcript.

What is an unweighted GPA?

An unweighted GPA is the plain average of your grade points on a 4.0 scale, where a class’s level makes no difference. On the common plus/minus scale used across this site, A = 4.0, A− = 3.7, B+ = 3.3, B = 3.0, B− = 2.7, and so on down to F = 0. Each class counts in proportion to its credits.

An A in Regular English and an A in AP Literature both add 4.0. A perfect unweighted GPA is therefore 4.0 (or 4.33 at schools that give an A+ extra value). The percent bands behind each letter vary, so convert carefully: on the plus/minus scale an A starts at 93%, but on a 10-point scale it starts at 90% (compare them on the grading scale chart). The percent to GPA converter shows any class grade on all three common scales.

Unweighted GPA is also what the federal High School Transcript Study uses. Its 2009 report put the average overall GPA of US graduates at 3.00, on a 4-point scale with no extra points for AP, IB or honors courses (NCES 2011-462↗).

What does weighted GPA mean?

A weighted GPA gives harder classes extra grade points. The most common convention, and the default on this site, is:

• Regular class: no bonus (A = 4.0)
• Honors: +0.5 (A = 4.5)
• AP, IB or dual enrollment: +1.0 (A = 5.0)

The bonus is added to the class’s points before averaging, so a B+ in AP Chemistry counts 4.3 instead of 3.3. Most schools add no bonus to an F, because a failed class earns no quality points.

The idea is to stop students from avoiding hard classes to protect their GPA. The side effect is that weighted GPAs are hard to compare between schools: a student with access to ten AP courses can reach a higher weighted GPA than a classmate across town whose school offers two, with identical grades. Weighted GPA measures grades and course difficulty together; unweighted measures grades alone.

Weighted vs unweighted GPA side by side

Table: Weighted vs unweighted GPA compared (common +0.5 / +1.0 weighting)

If a GPA on a profile or form is above 4.0, it is weighted. If it is 4.0 or below, check the label: a weighted GPA can also be under 4.0 when a student has few advanced classes or lower grades in them.

The math: one schedule, two GPAs

Both GPAs use the same formula, GPA = Σ(points × credits) ÷ Σ credits. Only the points change. Here is one year of six full-credit classes:

Table: Worked example, one year of six classes

Step 1: add the unweighted points: 3.7 + 3.3 + 4.0 + 3.0 + 3.7 + 4.0 = 21.7. Divide by 6 credits: 3.62 unweighted.

Step 2: add the bonuses: two honors classes give 0.5 each and the AP class gives 1.0, a total of 2.0. Weighted points are 23.7, divided by 6: 3.95 weighted.

The gap of 0.33 is simply the total bonus spread over all classes (2.0 ÷ 6). That relationship is what makes quick conversions possible: the weighted to unweighted GPA converter uses it in both directions. To run your own transcript, enter every semester in the weighted and unweighted GPA calculator.

How do schools weight classes?

There is no national rule. Weighting is set by the school, the district or, in some states, the state board. Common patterns you will meet:

• +0.5 honors, +1.0 AP/IB/dual enrollment. North Carolina requires one grading scale for all public high school courses under State Board Policy GRAD-009: an A is 4.0 in a standard course, 4.5 in honors and 5.0 in AP, IB or dual-enrollment college-transfer courses, and an F is 0 at every level (Orange County Schools, NC↗).
• A full letter for every advanced class. Arkansas uses a separate weighted scale for AP, IB, approved honors and concurrent courses: A = 5, B = 4, C = 3, D = 2, F = 0 (Arkansas Uniform Grading Scales rules, Cornell LII copy↗).
• Other local variations. Some schools weight only AP and IB, cap how many weighted classes count, use a 4.33 scale, or report only an unweighted GPA. Your student handbook or course catalog states the rule.

Because of this variety, the numbers on this site’s tools are a common default, not your school’s official method. If your result differs from your transcript, adjust the bonus to your handbook’s values.

Which GPA do colleges look at?

Colleges see the GPA your school reports, but many build their own from your transcript. Two official examples show how different those rules can be:

• University of Georgia. UGA recalculates a GPA for every first-year applicant from courses in five core areas (English, math, science, social science, foreign language), converts each grade using your high school’s scale, adds the equivalent of one letter grade for AP and IB grades, and adds no weight for honors or dual enrollment. It still counts honors and dual-enrollment classes when judging rigor (UGA first-year criteria↗).
• University of California. UC uses A-G courses from the summer after 9th grade through the summer after 11th grade, ignores pluses and minuses (A = 4, B = 3), and adds one point per semester of approved honors-level work (AP, IB and UC-certified honors), up to 8 points with no more than 4 from 10th grade (UC GPA requirement↗).

Applied to the example schedule above (simplified, treating both honors classes as UC-certified), the same year gives four different numbers:

These are illustrations computed from the stated rules, not official calculations. The takeaway: no single GPA travels with you unchanged, and rigor is read from your course list either way.

Which number should you use?

• If an application asks for your GPA “as reported on your transcript”, give exactly that number, weighted or unweighted, and label it.
• If a form asks for unweighted GPA on a 4.0 scale and your school reports only weighted, calculate it class by class and call it an estimate if your school didn’t produce it.
• If you are comparing yourself with published college ranges, check whether the college reports weighted, unweighted or its own recalculated GPA before reading anything into the gap.
• If you are choosing between an easier class and an advanced one, compare weighted and unweighted outcomes: with +1.0 weighting, a B in AP equals an A in a regular class in weighted terms.

To see what a number means as a letter or percent, use the GPA scale chart, or jump to a value page such as what a 3.5 GPA means. For projecting next term, the cumulative GPA calculator adds a new semester on top of your current GPA. Planning AP classes? Estimate where you stand with the AP score calculator, since exam scores and class grades are separate things.

Common mix-ups and how to fix them

If your middle schooler is asking about this already, grades before 9th grade follow their own rules, and some high school courses taken early do land on the high school transcript; see how middle school GPA works for the details.