How the weighted GPA calculator works
Every class goes through the same steps. Its letter grade becomes grade points on the standard 4.0 scale. If the class is Honors, AP, IB, or dual enrollment, the bonus for that level is added, unless the grade is an F. Then the points are multiplied by the class’s credits. Add it all up and divide by your credits, and you have your weighted GPA.
The unweighted GPA is the same calculation without the bonus. The gap between the two is what the calculator reports as “weighting added.” It’s a quick way to see how much of your number comes from the difficulty of your schedule and how much from your grades.
The default bonus values, and why they’re editable
- Honors +0.5, AP +1.0, IB +1.0. This is the split you’ll see most often in U.S. high schools, and it’s what the calculator starts with.
- Dual enrollment +1.0. These are real college courses, so many schools weight them like AP. Others give them Honors weight or nothing at all. Of the five levels, this one varies the most.
- Regular 0. Always. If your school doesn’t weight a level, set its bonus to 0.
Open “Your school’s bonus points” under the class list and type the values from your student handbook or transcript key. They’re saved in your browser with your classes.
Worked example: a junior schedule
| Class | Level | Grade | Unweighted | Bonus | Weighted |
|---|---|---|---|---|---|
| AP U.S. History | AP | B+ | 3.3 | +1.0 | 4.3 |
| AP Calculus AB | AP | B | 3.0 | +1.0 | 4.0 |
| Honors English 11 | Honors | A- | 3.7 | +0.5 | 4.2 |
| Chemistry | Regular | A | 4.0 | 0 | 4.0 |
| Intro to Psychology | Dual | A | 4.0 | +1.0 | 5.0 |
| Studio Art | Regular | A | 4.0 | 0 | 4.0 |
| Total (6 credits) | 22.0 | 3.5 | 25.5 |
Unweighted, that’s 22.0 ÷ 6 = 3.67. Weighted, it’s 25.5 ÷ 6 = 4.25. The 3.5 bonus points spread across 6 credits added 0.58. This is the schedule the calculator loads the first time you open it, so you can check every number.
Now say this student’s school gives dual enrollment only +0.5. Change that one value and the weighted GPA drops to 4.17, while the unweighted 3.67 doesn’t move. Same grades, different handbook. That’s why two students with identical report cards can list different weighted GPAs.
What a weighted number can hide
A weighted GPA mixes two things: how well you did and how hard your classes were. This table shows how they trade off for a student taking six one-credit classes with AP at +1.0:
| Grade average | 0 of 6 AP | 2 of 6 AP | 4 of 6 AP | 6 of 6 AP |
|---|---|---|---|---|
| A (4.0) | 4.00 | 4.33 | 4.67 | 5.00 |
| B+ (3.3) | 3.30 | 3.63 | 3.97 | 4.30 |
| B (3.0) | 3.00 | 3.33 | 3.67 | 4.00 |
| C+ (2.3) | 2.30 | 2.63 | 2.97 | 3.30 |
Straight B’s in six AP classes and straight A’s in six regular classes both come out at 4.00 weighted. A C+ average in all AP lands at 3.30, the same as a B+ average with no AP at all. Neither number is wrong, but each one leaves something out. That’s why admissions readers look at your schedule next to the GPA, and why the unweighted figure next to the weighted one is useful.
Whether an AP class is worth a lower letter grade is its own question. The weighted vs. unweighted GPA guide walks through that trade-off and how colleges read each number, and what a 4.0 GPA really means shows why a weighted 4.0 and an unweighted 4.0 are different achievements. Your AP exam score is separate from the class grade; for English Language, the AP Lang score calculator estimates it.
Where schools differ
- Size of the bonus. Some schools give Honors a full point. Others weight AP but not Honors.
- Which grades get it. This calculator never weights an F. Some schools also withhold the bonus for a D, so check your handbook if you have one.
- Which years count. Some districts weight only certain grade levels, or leave 9th grade out of the weighted GPA.
- Printed scale. Some transcripts show weighted grades on a 5.0 scale without calling it a bonus. The math is the same, but the labels differ.
- College recalculation. The University of California computes its own GPA from approved a-g courses taken in 10th and 11th grade. It adds an extra point for UC-approved honors-level courses, such as AP and IB, but only for a capped number of semesters, so a long list of AP classes doesn’t all count toward the bonus there. The UC GPA calculator applies those rules.
Next steps
For one term with the standard weights, the GPA calculator is quicker. To combine several semesters into one figure, use the cumulative GPA calculator. If you’re aiming for a weighted target, the raise GPA calculator handles a 5.0 maximum. And if you want the grade-point math from scratch, start with how to calculate GPA.