The AP Calculus BC exam is 3 hours and 15 minutes long.

How long is the AP Calc BC exam?

Here’s the time breakdown:

  • Total exam time: 3 hours 15 minutes.
  • Multiple-choice section: 1 hour 45 minutes total (Part A: 60 minutes, Part B: 45 minutes).
  • Free-response section: 1 hour 30 minutes total (Part A: 30 minutes, Part B: 60 minutes).

So if you’re planning your test day, expect to be actively testing a bit over three hours, plus extra time for check-in, breaks, and instructions. TL;DR:
AP Calc BC runs 3 hours 15 minutes from start to finish, split between multiple-choice (105 minutes) and free-response (90 minutes).

Information gathered from public forums or data available on the internet and portrayed here.