Honors adds 0.5 and AP or IB adds a full point on top of the base grade.
How weighting changes the picture
High school transcripts almost always carry two averages, and they can look very different from each other. The unweighted number sticks to the familiar 4.0 ceiling and treats every course the same. The weighted number rewards you for choosing harder classes, normally by adding half a point to honors work and a full point to AP or IB. A student who earns an A in AP calculus picks up 5.0 for that class on the weighted scale, which is how averages above 4.0 show up on report cards.
One detail catches people out. A failing grade does not earn a bonus no matter how hard the class was, and this calculator follows that rule. Districts also differ on the exact bump, with some adding a full point for honors and others adding nothing at all, so the number you see here is a close estimate rather than an exact copy of whatever your school prints.
Which number colleges actually use
Admissions offices know that weighting varies wildly between schools, so many of them recalculate every applicant onto one internal scale. They typically strip out electives, keep the core academic subjects, and apply their own weighting rules. This is good news if your school does not weight at all, because you are not being punished for it, and it means the honest answer to the question of which GPA matters is usually both.
What consistently helps is a schedule that shows you pushed yourself. A 3.7 earned across several AP courses tends to read better than a 4.0 built entirely from the easiest options on offer. Course rigor sits right next to GPA on most admissions rubrics, which is why the level dropdown in this calculator matters as much as the grade next to it.
Planning the rest of the year
If you have a target in mind, put your finished grades in first and then add rows for the classes still running. Try the outcome you are hoping for, then try one grade lower, and you will see immediately how much cushion you actually have. Freshman year grades pull hardest simply because they have been sitting in the average the longest, and a single semester later on moves the total less than most students expect.
For a running total across all four years, the cumulative calculator takes semester averages directly and saves you retyping every class. College students should use the college GPA calculator instead, since credit hours there work a little differently.
Common questions
How much does an AP class raise my GPA?+
Most schools add a full point, so an A becomes 5.0 instead of 4.0 and a B becomes 4.0 instead of 3.0. Honors classes usually get half a point. The exact bump varies by district, so check your school handbook before you count on it.
What is a good high school GPA?+
Anything at or above a 3.0 unweighted keeps a wide range of colleges open. A 3.5 makes you a strong applicant at most state universities, and the most selective schools generally see unweighted averages near 3.9.
Can my weighted GPA go above 5.0?+
It can at schools that add a full point to AP work and also count an A+ above 4.0, but it is unusual. A weighted average between 4.0 and 5.0 is the normal range for a demanding schedule.