Step 3 Exam Format: How Long Is Step 3 and How Many Questions?

Short answer: Step 3 is a two-day exam with 412 multiple-choice questions and 13 to 14 computer-based case simulations (CCS). Day 1 has 232 questions in 12 blocks and runs about 7 hours. Day 2 has 180 questions in 9 blocks, followed by the case simulations, and runs about 9 hours. Every question block is 30 minutes long.

Step 3 format at a glance

How long is Step 3?

About 16 hours of test sessions across two days. Day 1 adds up neatly: 12 blocks of 30 minutes is 360 minutes of questions, plus 55 minutes of break and the 5-minute tutorial, for 420 minutes, or 7 hours. Day 2 has 270 minutes of question blocks (9 × 30), two tutorials, and at least 45 minutes of break before the case simulations, which take up most of the remaining time in the roughly 9-hour session.

As on the other Step exams, break time is a pool you manage across the day, and USMLE says it grows when you finish a block or a tutorial before its time runs out.

How many questions are on Step 3?

412 multiple-choice questions in total: 232 on Day 1 and 180 on Day 2. Day 1 blocks hold 18 to 20 questions each, so the pace there is 90 to 100 seconds per question. Day 2 blocks hold 20, which is 90 seconds per question. The 13 to 14 case simulations on Day 2 are timed separately, case by case.

What each day tests

Day 1: Foundations of Independent Practice (FIP)

Multiple-choice questions only. USMLE lists foundational science, biostatistics and epidemiology, reading the medical literature, communication, ethics, systems-based practice, and patient safety, along with history, physical examination, diagnosis, and use of diagnostic studies. This day also includes newer item formats built around scientific abstracts and pharmaceutical advertisements, so practice reading both.

Day 2: Advanced Clinical Medicine (ACM)

Multiple-choice questions plus the case simulations. The focus shifts to managing patients over time: prognosis and outcome, health maintenance and screening, therapeutics, and medical decision making. For how the cases work and how USMLE scores them, see the Step 3 CCS cases guide, which also lists the six official practice cases.

How is Step 3 scored?

You receive one three-digit score for the whole exam, and the minimum passing score is 200. Both days count toward that score, although USMLE notes that the score report and transcript show only the first day of testing. Results usually arrive within four weeks, but USMLE advises allowing at least eight weeks.

Is 60% enough to pass Step 3?

Roughly, yes. The USMLE Bulletin says the percentage of questions needed to pass varies by Step and from form to form, but examinees typically need about 60% correct. That is a rule of thumb, not a guaranteed cutoff: scores on different forms are equated, meaning small adjustments for forms that are harder or easier, and USMLE states that its scores and pass/fail decisions are not set on a curve. Case simulations also count toward the Step 3 score.

To estimate where you stand, enter UWSA Step 3 and Free 120 results in the Step 3 score predictor. If you already have a score, the Step 3 percentile calculator shows where it ranks in the official norm table, and the USMLE score release dates guide estimates when your result will arrive.

How to plan for two test days

• Practice in 30-minute blocks. Every Step 3 question block uses that length on both days.
• On Day 1, pace for 18 to 20 questions per block and leave room for long abstract and drug-advertisement items.
• On Day 2, save energy and break time for the case simulations at the end of a 9-hour day.
• Run the official CCS practice cases before test day; no practice cases are available at the test center.
• Open every block on both days. USMLE warns that an exam with unopened blocks may not be scored and can be reported as incomplete.