AP Calculus AB Score Calculator (US Exam)

Both halves of the exam count the same: 45 multiple-choice questions at 1.2 points each make 54, and the six free-response questions are worth 54 raw points. The composite runs from 0 to 108 and is rounded before the cut score applies — 67.6 becomes 68 and reaches a 5.

This calculator estimates the 1-to-5 score for AP Calculus AB as the paper stood up to and including the May 2026 administration. Unlike exams that scale each section as a whole, this one attaches a fixed weight to every raw mark: 1.2 composite points per correct multiple-choice answer, and one composite point per free-response point. The two halves come out even because 45 × 1.2 = 54, exactly the 54 raw points of the six free-response questions at 9 each, so the composite runs from 0 to 108. The defaults work it through: 35 correct questions make 42.0, the 40 free-response points count as themselves, and the composite is 82 — comfortably past the 68 needed for a 5. Rounding happens before the comparison and can decide the grade on its own: one test case, 33 correct questions and 28 free-response points, makes 67.6, rounds to 68 and reaches a 5 the unrounded figure would miss. The weighting is the solid part of this; the ladder is not. 68, 52, 40 and 28 were back-calculated from released scoring worksheets rather than published, and they shift by roughly two to four composite points from year to year. Near a boundary that uncertainty is the larger quantity, so read the result as the region you are in rather than the grade you will get.