Weighted GPA Calculator
Pick a grade, tap a class level — your GPA updates instantly. Honors classes add +0.5 and AP/IB classes add +1.0, and you always see your weighted GPA next to your unweighted GPA on the plain 4.0 scale. It also works as an unweighted GPA calculator for college courses — just leave every level on Regular. Free, no signup, nothing to submit.
How the bonus works: an Honors class adds +0.5 to your grade points, and an AP/IB class adds +1.0. No class can go above 5.0 points, and a failed class (F) never gets a bonus. In college? Leave every class on Regular and look at the unweighted number.
Weighted vs unweighted GPA: what is the difference?
Every GPA starts the same way: each letter grade is converted to grade points on the 4.0 scale (A = 4.0, B = 3.0, C = 2.0, D = 1.0, F = 0), multiplied by the course's credits, and averaged. That plain average is your unweighted GPA — it treats an A in an easy elective exactly the same as an A in Advanced Placement Physics.
A weighted GPA fixes that problem by adding bonus points for harder classes. Honors courses usually earn +0.5 extra points and AP or IB courses earn +1.0, up to a maximum of 5.0 for a single course. Two students can therefore have the same unweighted GPA while the one who took the tougher schedule has a much higher weighted GPA — which is exactly the point.
| Unweighted GPA | Weighted GPA | |
|---|---|---|
| Scale | 0.0 – 4.0 | 0.0 – 5.0 |
| Course difficulty | Ignored — all classes count the same | Rewarded — Honors +0.5, AP/IB +1.0 |
| An A is worth | 4.0 in every class | 4.0 Regular · 4.5 Honors · 5.0 AP/IB |
| Best for | Comparing grades directly; college GPA | Class rank and showing course rigor |
| Used by | Colleges (often recalculated), employers | High schools, class rank, honor rolls |
How the weighting works
The boost is added to the grade points of each individual course before the average is taken:
Regular: no boost. An A is worth 4.0 points, a B is worth 3.0, and so on.
Honors: +0.5 points. An A becomes 4.5, a B becomes 3.5.
AP / IB: +1.0 point. An A becomes 5.0, a B becomes 4.0 — the same as an A in a regular class.
Two safeguards keep the system fair. First, weighted points are capped at 5.0, so nothing can push a course above the top of the scale. Second, an F is never boosted: failing an AP class still earns 0 points, because the bonus rewards achievement in a hard class, not just enrollment in one.
How to calculate weighted GPA
- List your courses with the letter grade and credits (or credit hours) for each one.
- Convert each grade to points on the 4.0 scale: A = 4.0, B = 3.0, C = 2.0, D = 1.0, F = 0 (with +/− adjustments such as A− = 3.7 and B+ = 3.3 where your school uses them).
- Add the level boost to each course: +0.5 for Honors, +1.0 for AP or IB, never above 5.0, and never for an F.
- Multiply each course's weighted points by its credits.
- Add up all the weighted points and all the credits.
- Divide total weighted points by total credits. That is your weighted GPA.
Worked example: an AP course with an A (4.0 + 1.0 = 5.0 points) at 1 credit, plus a regular course with a B (3.0 points) at 1 credit, gives (5.0 + 3.0) ÷ 2 = 4.00 weighted GPA. Without the boost it would be (4.0 + 3.0) ÷ 2 = 3.50 unweighted — try it in the calculator above, where this example is pre-filled.
How colleges and universities look at weighted GPA
Colleges know that grading scales vary wildly between schools, so most admissions offices do not take your weighted GPA at face value. Many recalculate every applicant's GPA on a common unweighted 4.0 scale using only core subjects, then judge the rigor of your schedule separately from your transcript. In other words, the weighted number on your report card matters less than the story behind it: strong grades earned in demanding classes.
That does not make weighted GPA pointless. Your high school uses it for class rank, honor roll and valedictorian decisions, and a high weighted GPA signals to colleges that you challenged yourself. The practical takeaway: a B in an AP class (4.0 weighted) usually looks better than an A in an easy class (also 4.0) — but a string of C's in advanced classes helps no one. Choose the hardest schedule you can genuinely succeed in.
Students in Canada, the UK and Australia
The Honors/AP weighting system is mainly a US high school convention. Canadian students usually work in percentages, and universities convert those percentages to a 4.0 GPA — use our Canada GPA Calculator for OMSAS and other provincial scales. In the UK, there is no GPA at school level; at university, module marks are weighted by credit value to produce your degree classification — see the UK Grade Calculator. Australian universities weight unit results by credit points to calculate your GPA on a 7-point scale or your WAM — the Australia GPA Calculator handles both. In each case the underlying idea is identical to this page: results are averaged in proportion to how much each course counts.
Frequently asked questions
What is a weighted GPA?
A weighted GPA is a grade point average that gives extra credit for harder courses. On the standard 4.0 scale, Honors classes typically add +0.5 points and AP or IB classes add +1.0 point to the grade points for that course, up to a maximum of 5.0. This rewards students who take more challenging classes instead of easier ones.
What is the highest weighted GPA?
The highest weighted GPA is usually 5.0, reached by earning straight A's in AP or IB courses, since each A (4.0) receives the full +1.0 boost. In practice most students land below 5.0 because not every course is an AP or IB class. A small number of schools use their own scales that can go slightly above 5.0, but 5.0 is the standard maximum.
Do colleges prefer weighted or unweighted GPA?
Colleges look at both. Admissions offices review your unweighted GPA to see your actual grades, and your weighted GPA (or your course list itself) to see how challenging your classes were. Many colleges recalculate GPA using their own formula, so there is no single number they prefer — strong grades in rigorous courses is the combination they reward most.
How much does an AP class add to your GPA?
An AP (or IB) class typically adds +1.0 point to the grade points for that course. An A in a regular class is worth 4.0 points, while an A in an AP class is worth 5.0 points. Honors classes usually add +0.5, so an A in an Honors class is worth 4.5 points. The boost never applies to an F, and totals are capped at 5.0.
Is a 4.5 GPA good?
Yes — a 4.5 weighted GPA is excellent. It means you are earning mostly A's and B's in advanced Honors, AP or IB courses, which puts you well above the average high school GPA of around 3.0 unweighted. A 4.5 weighted GPA is competitive for selective colleges and universities, especially alongside strong test scores and activities.
Can I use this calculator for college courses?
Yes. College courses do not normally use Honors or AP weighting, so just leave the course level set to Regular for every class. The unweighted GPA shown is then your standard college GPA on the 4.0 scale, calculated from your letter grades and credit hours.