How this instrument works
An unweighted GPA converts each letter grade straight to grade points on a 4.0 scale — A=4, B=3, C=2, D=1, F=0 — with no regard for how difficult the course was. A weighted GPA fixes the obvious unfairness in that: an A earned in an easy elective and an A earned in AP Calculus count identically under the unweighted scheme, even though the AP course demanded far more. Weighting adds a bonus on top of the base grade points depending on the course's level, so harder classes contribute more to the final number.
This instrument uses the most common US weighting convention: Regular courses get no bonus (+0), Honors courses add +0.5, and AP or IB courses add +1.0 to the base letter-grade points, before those adjusted points are weighted by each course's credit hours and averaged. An A (4 points) in an AP class is therefore worth 5.0 grade points — higher than the 4.0 maximum on an unweighted scale — which is exactly why a strong weighted GPA can legitimately exceed 4.0.
The bonus convention isn't universal, though it's widespread enough to be the default most calculators (including this one) assume. Some districts use different bonuses, such as +1.0 for Honors and +2.0 for AP, and a few don't weight at all. Always check your own school's official grading policy or guidance-counselor handout before submitting a weighted GPA on an application, since colleges generally recalculate applicants' GPAs to a common scale anyway and want to see your school's own stated methodology alongside the number.
This instrument combines up to four courses into one weighted GPA for whatever set you enter — typically a semester's or a year's course load rather than a full four-year cumulative GPA. To roll multiple terms together, add up each term's total weighted grade points and total credits separately, then divide the combined sums, the same way a registrar updates a transcript term over term.
- For each course, select its Letter grade (A through F).
- Select that course's Course level — Regular (+0.0), Honors (+0.5), or AP / IB (+1.0).
- Enter the course's Credits.
- Set a course's Credits to 0 if you want to exclude that row from the calculation entirely.
- Weighted GPA updates automatically as you fill in each course, combining the letter-grade points, level bonus, and credit weighting.
Worked example — four courses, mixed levels
A student takes an AP course earning an A (4 + 1.0 = 5.0 points), an Honors course earning a B (3 + 0.5 = 3.5 points), a Regular course earning an A (4 + 0 = 4.0 points), and a Regular course earning a C (2 + 0 = 2.0 points), each worth 1 credit. The weighted total is 5.0 + 3.5 + 4.0 + 2.0 = 14.5 grade points across 1+1+1+1 = 4 credits.
Weighted GPA reads 14.5 / 4 = 3.625. An unweighted GPA for the same four letter grades (A, B, A, C) would average to (4+3+4+2)/4 = 3.25 — the AP and Honors bonuses lift the weighted figure noticeably above that, rewarding the two harder courses in the schedule even though the raw letter grades didn't change.
Questions
What's the difference between weighted and unweighted GPA?
Unweighted GPA converts letter grades straight to points on a 4.0 scale with no regard for course difficulty — an A is always worth 4.0. Weighted GPA adds a bonus on top of that base value depending on the course's level, commonly +0.5 for Honors and +1.0 for AP or IB, before averaging. The same set of letter grades will produce a higher weighted GPA than unweighted GPA for any student who took at least one Honors, AP, or IB class, since those bonuses only ever add points, never subtract.
How much does an AP or Honors class actually boost my GPA?
Under the common convention this calculator uses, an Honors class adds 0.5 grade points and an AP or IB class adds 1.0 grade point to the base letter-grade value, before credit-weighting. A single AP A, worth 5.0 points instead of the unweighted 4.0, pulls a four-course average up by roughly a quarter of a point compared to earning that same A in a Regular course — the exact effect on your overall GPA depends on how many other courses and credits it's averaged against.
Why do the bonus amounts vary between schools?
There's no single national standard for weighted GPA — each school district sets its own policy, and while +0.5 for Honors and +1.0 for AP/IB is the most widely used convention (and the one this calculator defaults to), some schools use different bonuses, weight differently by subject, or don't weight at all. Because colleges know this varies, most recalculate applicants' GPAs onto their own common scale during admissions review rather than comparing raw weighted GPAs directly across schools.
Can a weighted GPA go above 4.0?
Yes — that's the whole point of weighting. A student earning straight A's entirely in AP or IB courses gets 4 + 1.0 = 5.0 grade points per course, so their weighted GPA caps out at 5.0 under this convention rather than the unweighted maximum of 4.0. A weighted GPA above 4.0 simply reflects a course load with a meaningful share of Honors, AP, or IB classes, not a calculation error.
Does this calculate my cumulative GPA across all four years?
No — it calculates the weighted GPA for whatever up-to-four courses you enter, typically representing one term or semester. To build a cumulative GPA across multiple semesters, add each term's total grade points (letter points plus level bonus, times credits, summed) together with its total credits, do the same for every other term, then divide the grand totals — the same running-total method your school's registrar uses to update your transcript GPA each term.