The AP Calculus AB exam is 3 hours and 15 minutes long in total

. It is divided into two main sections:

• Multiple-Choice Section : 45 questions total, lasting 1 hour and 45 minutes. This section is further split into two parts:
  • Part A: 30 questions in 60 minutes (calculator not permitted)
  • Part B: 15 questions in 45 minutes (graphing calculator required)

• Free-Response Section : 6 questions total, lasting 1 hour and 30 minutes. This is also split into two parts:
  • Part A: 2 questions with calculator allowed
  • Part B: 4 questions without calculator allowed

There is typically a short break between the two sections. The exam tests a range of calculus topics including limits, derivatives, integrals, and their applications

. In summary, the AP Calculus AB exam lasts 3 hours and 15 minutes, with 1 hour 45 minutes for multiple-choice and 1 hour 30 minutes for free-response questions.