Weighted vs Unweighted GPA: What's the Difference?
The short answer
An unweighted GPA counts every class the same: an A is worth 4.0 whether it is in gym or AP Chemistry. A weighted GPA adds extra points for harder classes, so an A in an honors or AP class can be worth 4.5 or 5.0. That is why a weighted GPA can go above 4.0 and an unweighted one cannot.
There is no single national rule for the extra points. The College Board’s BigFuture GPA guide says some schools use a weighted system for AP and honors classes, that schools may calculate GPA differently, and that colleges may recalculate your GPA with their own rules. Your school’s own policy is the one that counts.
Unweighted GPA: the 4.0 scale
Each letter grade turns into grade points. The plain version, which BigFuture uses in its example, is:
| Grade | Points |
|---|---|
| A | 4.0 |
| B | 3.0 |
| C | 2.0 |
| D | 1.0 |
| F | 0.0 |
Add the points and divide by the number of classes. BigFuture’s own example: three A’s, one B and one C give (4.0 + 4.0 + 4.0 + 3.0 + 2.0) ÷ 5 = 3.4.
Many schools and colleges also use pluses and minuses. Pepperdine University’s registrar, for example, lists A 4.0, A− 3.7, B+ 3.3, B 3.0, B− 2.7, C+ 2.3, C 2.0, C− 1.7, D+ 1.3, D 1.0, D− 0.7 and F 0.0.
When classes carry different credits, multiply each grade’s points by the credits, add those up and divide by the total credits. A 4-credit class then counts four times as much as a 1-credit one.
Weighted GPA: extra points for harder classes
A weighted GPA adds a bonus to the points for designated courses. One real example is the St. Johns County School District in Florida, which publishes its scale:
| Course type | A | B | C | D | F |
|---|---|---|---|---|---|
| Standard | 4 | 3 | 2 | 1 | 0 |
| Honors | 4.5 | 3.5 | 2.5 | 1.5 | 0 |
| AP, Dual Enrollment, AICE, IB | 5 | 4 | 3 | 2 | 0 |
So honors adds 0.5 and AP, dual enrollment, AICE and IB add 1.0, but an F stays at 0. The same district keeps both numbers: a weighted “district” GPA with the bonuses, and an unweighted “state” GPA on the standard scale, which it uses to check state graduation requirements.
Other schools use different bonuses, weight only some courses, or do not weight at all. Check your student handbook or ask your counselor which courses are weighted and by how much.
Worked example: the same transcript, two GPAs
One semester, one credit per class, no pluses or minuses:
| Class | Grade | Unweighted points | Weighted points (St. Johns scale) |
|---|---|---|---|
| AP Biology | A | 4.0 | 5.0 |
| Honors English | B | 3.0 | 3.5 |
| Algebra II | A | 4.0 | 4.0 |
| AP US History | B | 3.0 | 4.0 |
| Spanish II | C | 2.0 | 2.0 |
| Total | 16.0 | 18.5 |
- Unweighted GPA: 16.0 ÷ 5 = 3.20
- Weighted GPA: 18.5 ÷ 5 = 3.70
Same grades, half a point apart. That gap is why a 3.7 from one school and a 3.7 from another may not mean the same thing, and why it matters which number a scholarship form or application asks for.
The GPA calculator does both at once. Mark each class as regular, honors or AP/IB, and it shows the unweighted and weighted GPA side by side. Its default bonuses are 0.5 for honors and 1.0 for AP or IB, and you can change them to match your school.
How colleges handle it: the UC example
Because schools weight differently, many colleges rebuild your GPA from your transcript. BigFuture lists the kinds of changes they make: removing noncore courses such as PE and electives, focusing on core subjects, and adjusting or removing honors and AP weighting so applicants can be compared.
The University of California publishes exactly how it does this on its GPA requirement page:
- It uses letter grades in its A-G college-prep courses from the summer after 9th grade through the summer after 11th grade.
- Pluses and minuses do not count: A = 4, B = 3, C = 2, D = 1.
- Each semester of a qualifying honors course adds one point, up to a maximum of 8 points across 10th and 11th grades, with no more than 4 from 10th grade.
- A D or F in an honors course earns no extra point.
- For nonresidents, UC gives honors weight only for AP or IB courses, not school-designated honors courses.
- It adds all the points and divides by the number of letter grades, with no rounding.
California applicants need at least a 3.0 on this calculation and nonresidents at least a 3.4. A student with a 3.70 weighted GPA at their own school could have quite a different UC GPA, depending on which years and courses are counted.
Which GPA should you report?
- On applications, report the GPA the form asks for, exactly as your school calculates it. If the form says “weighted” or “unweighted”, give that one. Your transcript will show the school’s figures anyway.
- For your own planning, keep track of both. The unweighted GPA is easier to compare across schools; the weighted one reflects your course load the way your school sees it.
- In college, use your registrar’s published scale, like the Pepperdine example above, and weight each class by its credits.
Common mistakes
- Comparing a weighted GPA with someone else’s unweighted one. They are not on the same scale.
- Adding a bonus to an F. On scales like St. Johns County’s, an F is 0 in every course type.
- Assuming every honors class is weighted. Some schools weight only AP, IB or dual enrollment. UC gives no extra point for school honors classes to nonresidents.
- Ignoring credits. A half-credit class should count half as much as a full-credit one.
- Treating any calculator as official. Your school’s registrar or counselor has the final word on your GPA.
Related tools
- GPA calculator: weighted and unweighted GPA, cumulative GPA, and the GPA you need next term to reach a goal.
- Grade calculator: turn your class scores into a percent and letter first.
- Final grade calculator: the score you need on the final to keep or raise that letter.
The scales and rules on this page were checked on the College Board, St. Johns County, University of California and Pepperdine pages in October 2026. Policies change, so confirm with your own school.