What's on the AP Calculus AB Exam? Units, Weights, Prep

What's on the AP Calculus AB exam comes down to eight units, set weight ranges, and four scored parts that do not all count the same. If you know those weights, you can spend more time on the topics most likely to show up. This matters because AP exams are given once a year, in the first two weeks of May, and each college sets its own credit policy.

If you want a cheap way to study by unit, the $5 AP Calculus AB study guide is a 39-page printable PDF built from the official units and weights. In this post, you will see the unit breakdown, the exam sections, the May 2027 change, and how the guide and the $19 course line up with the test.

The 8 units, and which ones matter most

If you are asking what's on the AP Calculus AB exam, start with the unit weights. The table below gives the full breakdown. Do not treat every unit the same. Two units carry the most weight: Analytical Applications of Differentiation, and Integration and Accumulation of Change, each at 15 to 20%. That means either one can matter more than a smaller unit by a wide margin.

Here is the simple study point: the heavy units should get the most time, not just a quick review. The 10 to 15% units are still important, but the 5 to 10% units should not take the same share of your schedule unless they are a weak spot for you. A good first pass is to sort your time into three buckets: most time for the two 15 to 20% units, solid time for the four 10 to 15% units, and lighter review for the two 5 to 10% units.

That is exactly how the $5 study guide is set up. The guide has one chapter per official unit, and it starts with the heaviest-weighted units first. It also gives you 2-, 4- and 8-week study plans built from the exam weights, so you do not have to guess how to split your time.

If you want to try before buying, the guide page includes 10 free sample questions. That makes it easy to see if the level and style fit how you study.

What the heavier units mean for your study time

The weights tell you where to focus, but they also tell you what not to do. Many students spend too long on early review and not enough time on the units that show up more often. For AP Calculus AB, that can be a problem because the exam puts the most weight on Unit 5 and Unit 6: Analytical Applications of Differentiation, and Integration and Accumulation of Change.

A smart plan is to give those two units first claim on your calendar. Then give steady time to Limits and Continuity, Differentiation: Definition and Fundamental Properties, Contextual Applications of Differentiation, and Applications of Integration. Save shorter review blocks for Differentiation: Composite, Implicit, and Inverse Functions, and for Differential Equations, unless those are the topics you miss most often.

The TransferCredit materials are built around that same logic. The printable guide puts the heaviest-weighted chapters first, flags common exam traps, and ends with a 2-page cram sheet for the night before. Inside the 39 pages, you also get 182 key terms, each with an example, plus 44 practice questions with every answer explained.

If you want more than a PDF, the $19 AP Calculus AB prep course goes chapter by chapter too. It has 9 chapters, 58 lessons, 60 quizzes, and 10 interactive labs. That setup works well if you learn better by doing short pieces in order instead of reading one guide straight through.

Exam sections, question types, and score share

Knowing what's on the AP Calculus AB exam also means knowing how the score is built. The exam has four separately weighted parts. The official materials show the parts as 35%, 15%, 16.7%, and 33.3%, which add to 100. The exam is often described as a 50% multiple-choice and 50% free-response split, but the table below is more useful because it shows how each part counts on its own.

The first big takeaway is calculator use changes by part. Multiple Choice Part A is no calculator. Multiple Choice Part B uses a graphing calculator. Free Response Part A uses a graphing calculator, and Free Response Part B does not. So your prep should include both kinds of work: solving efficiently by hand, and using a graphing calculator when the section allows it.

The second takeaway is that the no-calculator free-response part is large. Four tasks count for 33.3% of the score. That means written work without a calculator deserves real practice time, not just a quick skim.

Each free-response question is worth 9 raw points, for 54 raw points total across all 6 tasks. After you practice, you can use the free AP score calculator to enter your raw points by section and see an estimated 1 to 5 score. It is only an estimate, not an official conversion, but it is useful for checking where you stand.

What changed for the May 2027 exam

There is one format change you should know. The May 2026 exam had 45 multiple-choice questions, split as 30 in Part A and 15 in Part B. From May 2027 forward, the multiple-choice total is 42, split as 29 in Part A and 13 in Part B. The free-response side stays at 6 tasks, with 2 in calculator Part A and 4 in no-calculator Part B.

That means older materials can still help with content review, but they may not match the current count of multiple-choice questions. If you are choosing prep now, it makes sense to use materials that match the May 2027 exam format.

That is a strong reason to consider the AP Calculus AB prep course. It is built for the May 2027 exam. Along with the lessons and quizzes, it includes a timed final practice exam and a final exam, each with a written part and a scoring guide. That makes it easier to rehearse the current test shape instead of the older 30 and 15 split.

You can also add the free practice test to check your timing and accuracy on original questions that follow the official course units and weights. It has 25 questions, and a free account shows your score and explanations. That is a quick way to find out which units need more time before exam week.

How the $5 guide lines up with the exam

If you want the lowest-cost prep option, the guide is the easy place to start. The $5 AP Calculus AB study guide is a one-time purchase and an instant download. It is a printable PDF of 39 pages, so it works well if you like paper notes, marking up examples, and studying away from a screen.

What you get is tightly tied to the exam outline. The guide has one chapter per official unit, and the chapters are ordered heaviest-weighted first. That matters because it pushes you toward the material that has the most impact on the exam. Inside, there are 182 key terms, each with an example, plus 44 practice questions with every answer explained. It also flags common exam traps, which is useful in calculus because small setup errors can throw off a whole solution.

The guide is best for students who already have class notes or a textbook and want a short, targeted review. It is also a good fit if you need a clear plan fast. The included 2-, 4- and 8-week study plans are built from the exam weights, so you can pick the schedule that matches the time left before May.

You can preview the style before you buy. The guide page includes 10 free sample questions. For $5, that is a simple way to get a structured review without committing to a larger package.

Who should buy the course or an AP plan

The best choice depends on how much structure you want, and how many AP subjects you need help with. If AP Calculus AB is the only subject you are shopping for right now, the math is simple. The guide is $5. The course is $19. Together, that is $24.

Buy the guide if you want the cheapest focused review, a printable format, and study plans built from the exam weights. Buy the course if you want lessons, quizzes, labs, and practice exams built for the May 2027 exam. Buy both if you want a read-and-practice combo without moving up to a plan.

If you are studying for more than one AP exam, a plan may cost less than buying several guides one by one. AP Monthly is $29 a month and includes all 42 AP study guides and 36 AP prep courses. AP Lifetime is $149 once and includes all 42 AP study guides and 36 AP prep courses for good. You can compare options on the AP prep hub page or the AP plans page.

If you want everything in one purchase, the All-Access Bundle is $455 once and includes every CLEP and DSST prep course, 36 AP prep courses and every AP, CLEP and DSST study guide, for life. Plans cover prep only. Exam fees are paid separately when you register for the exam.

Frequently Asked Questions about AP Calculus Prep

Final Thoughts on AP Calculus Prep

If you want to prep smarter, match your time to the unit weights and the four exam parts. Start with the heavy units, practice both calculator and no-calculator work, and make sure your materials fit the May 2027 format. For a cheap, clear review, start with the $5 study guide. If you want more structure and current-format practice, add the $19 prep course. Your next step is simple: open the guide, preview the sample questions, and decide if you want the guide alone or the $24 guide-and-course combo.