AP Calculus AB score calculator.

AP Calculus AB exam format

The College Board describes AP Calculus AB as a 42-question multiple-choice section (1 hour 40 minutes, 50% of the exam score) in two parts, Part A with 29 questions and no calculator and Part B with 13 questions and a graphing calculator, followed by a free-response section (1 hour 30 minutes, 50%) of six questions: Part A has 2 questions with a graphing calculator and Part B has 4 questions with no calculator.

The 2025 scoring guidelines list each of the six free-response questions at 9 points, which makes 54 points. The College Board says the free-response questions include at least two with a real-world context.

How the composite is worked out

The calculator turns each section into a share of the composite using its published weight: 42 multiple-choice questions (50% of the exam score) and 6 free-response questions (50%). Multiple choice counts 1.2 composite points per correct answer here, and each free-response point is worth about 0.93 composite points. One multiple-choice question is worth about 1.2 composite points here, and one free-response point about 0.93.

Worked example

With 33 of 42 multiple-choice correct and 38 of 54 free-response points, the multiple-choice section contributes 39.3 composite points and the free-response section 35.2, for 74.5%. With the starting cut points that is an estimated 5; about 0 more multiple-choice answers would reach the cut for a null.

Reality check from the 2026 results

On the 2026 exam, 20% of students earned a 5, 28% a 4, 17% a 3, 24% a 2 and 11% a 1; 65% earned a 3 or higher. 35% of students earned a 1 or 2, so a few composite points near the lower cuts can matter.

Cut points: what is and is not known

The College Board says AP cut points are set using research that compares AP students with college students in comparable courses, and it does not publish them. The starting cut points on this page (70%, 55%, 40% and 28% for a 5, 4, 3 and 2) are placeholders. If you know how a recent practice test was curved by your teacher or a published source, enter those numbers instead. Treat a result within a few points of any cut as undecided.

Scoring your free response honestly

Grade each of the six questions out of 9 using the released scoring guidelines. Show every step the guideline asks for, and do not give yourself a point for a correct final number if the guideline requires the setup as well.

Sources

• 2025 AP Calculus AB scoring guidelines — six free-response questions at 9 points each
• AP Calculus AB exam page (College Board) — exam format, section question counts and weights
• 2026 AP Score Distributions (College Board) — share of students earning each score
• About AP Scores (College Board) — how scores are combined and how cut points are set
• AP Score Scale Table (College Board) — what each score recommends

Section counts, weights and 2026 distributions were retrieved November 2026 from the College Board pages listed. The cut points are editable assumptions, not College Board data.

Frequently asked questions

How is AP Calculus AB scored?

The multiple-choice section has 42 questions and counts for 50% of the exam score. The free-response section has six questions and counts for the other 50%. The 2025 scoring guidelines list each free-response question at 9 points.

How many free-response points are there on AP Calculus AB?

Six questions at 9 points each in the 2025 scoring guidelines, so 54 points.

Does this calculator know the AP Calculus AB curve?

No. The College Board does not publish composite cut points. The starting cut points are editable assumptions.

What share of students earn a 5 on AP Calculus AB?

In the 2026 results 20% earned a 5 and 65% earned a 3 or higher.