USMLE Step 2 CK (USMLE Step 2 Clinical Knowledge) — Free Online Mock Test

16 blocks × up to 20 Q × 30 min (post-May-7-2026 format; pre-May-2026 was 8 × 40 × 60). Total ≤318 Q. · Official language: English.

Elite United States Medical Licensing 320 questions 480 min 50 distinct variants
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USMLE Step 2 CK exam at a glance

320
Questions
480
Minutes total
16
Sections
50
Variants

USMLE Step 2 CK full-length mock tests

Attempt 50 full-length USMLE Step 2 CK mock tests, each a distinct question set built on the real 320-question, 480-minute pattern — with instant scoring and section-wise analysis. The first 3 are free.

USMLE Step 2 CK Mock Test 01Free
320 Qs · 320 marks · 480 min
USMLE Step 2 CK Mock Test 02Free
320 Qs · 320 marks · 480 min
USMLE Step 2 CK Mock Test 03Free
320 Qs · 320 marks · 480 min
USMLE Step 2 CK Mock Test 04Pro
320 Qs · 320 marks · 480 min
USMLE Step 2 CK Mock Test 05Pro
320 Qs · 320 marks · 480 min
USMLE Step 2 CK Mock Test 06Pro
320 Qs · 320 marks · 480 min
USMLE Step 2 CK Mock Test 07Pro
320 Qs · 320 marks · 480 min
USMLE Step 2 CK Mock Test 08Pro
320 Qs · 320 marks · 480 min
USMLE Step 2 CK Mock Test 09Pro
320 Qs · 320 marks · 480 min
USMLE Step 2 CK Mock Test 10Pro
320 Qs · 320 marks · 480 min
USMLE Step 2 CK Mock Test 11Pro
320 Qs · 320 marks · 480 min
USMLE Step 2 CK Mock Test 12Pro
320 Qs · 320 marks · 480 min
See all 50 USMLE Step 2 CK mock tests →

USMLE Step 2 CK key facts & eligibility

USMLE Step 2 CK at a glance — verified exam facts
Conducting bodyUSMLE program — co-sponsored by the Federation of State Medical Boards (FSMB) and the National Board of Medical Examiners (NBME)
Official websiteusmle.org ↗
ModeA one-day, computer-based examination taken at a Prometric test centre in a 9-hour session.
FrequencyOffered year-round by appointment during eligibility periods.
Scoring & markingStep 2 CK has up to 318 multiple-choice items across a 9-hour session — delivered from 7 May 2026 in sixteen 30-minute blocks (previously eight 60-minute blocks; the total items and duration are unchanged). Unlike Step 1, it is still reported as a three-digit numeric score, and the passing standard rose to 218 for test dates on or after 1 July 2025. It assesses the application of clinical knowledge and skills for patient care under supervision across internal medicine, surgery, pediatrics, obstetrics & gynecology, psychiatry and more, with emphasis on health promotion and disease prevention.
Score validityThe result becomes part of the permanent USMLE record and is used in residency selection.
LanguageEnglish.

Who is eligible for USMLE Step 2 CK?

Open to medical students and graduates of LCME/COCA-accredited U.S./Canadian schools, and to eligible international students/graduates via ECFMG — usually taken during or after the clinical clerkships.

Last verified July 2026 against USMLE Step 2 CK. Always confirm current details on the official website before you register.

USMLE Step 2 CK section breakdown

The USMLE Step 2 CK mock test on Wrexa Edge replicates the real exam's section structure — same names, same question count per section, same time limits. Inter-section breaks are enforced.

USMLE Step 2 CK scoring & marking scheme

+1
Per correct answer
0
Per wrong answer
0
Per blank / skipped
0–100
Scaled score range

Strategy: USMLE Step 2 CK has no negative marking. Attempt every question — blank answers cost you potential marks but cannot pull your score down.

Scale: USMLE Step 2 CK (% accuracy).

How USMLE Step 2 CK is conducted

Tools available during the USMLE Step 2 CK exam

Wrexa Edge renders these tools inside the mock test exactly as they appear on the real USMLE Step 2 CK exam — same shortcuts, same behaviour.

USMLE Step 2 CK time strategy

With 320 questions in 480 minutes, you have about 90 seconds per question on average. Successful candidates aim for the following pacing on each section:

Wrexa Edge's analytics show your actual time-per-question after every mock so you can spot which sections you're losing time on.

USMLE Step 2 CK topics covered

Across the 50 Wrexa Edge variants of USMLE Step 2 CK, the following topics appear most often (sample distribution from one variant):

Block 1 (20 Q)

Block 2 (20 Q)

Block 3 (20 Q)

Block 4 (20 Q)

Block 5 (20 Q)

Block 6 (20 Q)

Block 7 (20 Q)

Block 8 (20 Q)

Block 9 (20 Q)

Block 10 (20 Q)

Block 11 (20 Q)

Block 12 (20 Q)

Block 13 (20 Q)

Block 14 (20 Q)

Block 15 (20 Q)

Block 16 (20 Q)

USMLE Step 2 CK difficulty calibration

Elite tier. Elite-tier: among the toughest exams in its category. Most successful candidates prepare for 6-12+ months.

16 blocks × up to 20 Q × 30 min (post-May-7-2026 format; pre-May-2026 was 8 × 40 × 60). Total ≤318 Q. · Official language: English.

Verified content — Wrexa Edge's USMLE Step 2 CK bank has been deeply curated with real exam-aligned content (estimated 100% syllabus coverage).

How Wrexa Edge prepares you for USMLE Step 2 CK

USMLE Step 2 CK study plan

A phase-by-phase roadmap from your first concept to test-ready. Stretch or compress each phase to fit the time you have before your attempt.

1 Phase 1 — Clinical foundations Months 1–2
  • Systems-based clinical review across the core specialties
  • Start UWorld Step 2 CK by system in tutor mode
  • Emphasise diagnosis and next-best-step reasoning
2 Phase 2 — Question-driven mastery Months 3–4
  • Complete the UWorld QBank, reviewing every explanation
  • Consolidate weak specialties
  • Practise health-promotion and screening topics
3 Phase 3 — Assessments Final weeks
  • NBME CCSSA self-assessments to confirm readiness
  • Timed, full-length blocks for stamina
  • Target remaining weak areas

Where USMLE Step 2 CK can take you

A strong USMLE Step 2 CK result opens up these careers and higher-study paths:

Best books & official prep for USMLE Step 2 CK

Official practice: Because Step 2 CK is still scored and matters for residency, drill UWorld thoroughly, review every explanation, and benchmark with NBME self-assessments before test day.

Previous-year papers: The USMLE releases official practice materials and free sample items rather than past papers.

Frequently asked questions

What is the USMLE Step 2 CK exam pattern?
USMLE Step 2 Clinical Knowledge contains 320 questions across 16 sections: Block 1 (20 Q), Block 2 (20 Q), Block 3 (20 Q), Block 4 (20 Q), Block 5 (20 Q), Block 6 (20 Q), Block 7 (20 Q), Block 8 (20 Q), Block 9 (20 Q), Block 10 (20 Q), Block 11 (20 Q), Block 12 (20 Q), Block 13 (20 Q), Block 14 (20 Q), Block 15 (20 Q), Block 16 (20 Q). Total duration is 480 minutes (about 90 seconds per question).
Does USMLE Step 2 CK have negative marking?
No — USMLE Step 2 CK has no negative marking. Each correct answer is worth 1 mark, so attempt every question.
How is USMLE Step 2 CK scored?
Scaled score range: 0 to 100. USMLE Step 2 CK (% accuracy).
How can I practise USMLE Step 2 CK online for free?
Wrexa Edge gives you 3 free full-length USMLE Step 2 CK mock tests — with instant scoring, detailed explanations and analytics — plus 47 more with Pro. Start practising in under a minute, no card required.
What is the difficulty level of USMLE Step 2 CK?
USMLE Step 2 CK is rated Elite difficulty on Wrexa Edge. Elite-tier: among the toughest exams in its category. Most successful candidates prepare for 6-12+ months. 16 blocks × up to 20 Q × 30 min (post-May-7-2026 format; pre-May-2026 was 8 × 40 × 60). Total ≤318 Q. · Official language: English.
How long is the USMLE Step 2 CK exam?
USMLE Step 2 CK runs for 480 minutes total across 16 sections. On Wrexa Edge the timer is enforced exactly as on the real exam — including mandatory inter-section breaks.
What topics are covered in USMLE Step 2 CK?
USMLE Step 2 CK is split into: Block 1 (20 Q), Block 2 (20 Q), Block 3 (20 Q), Block 4 (20 Q), Block 5 (20 Q), Block 6 (20 Q), Block 7 (20 Q), Block 8 (20 Q), Block 9 (20 Q), Block 10 (20 Q), Block 11 (20 Q), Block 12 (20 Q), Block 13 (20 Q), Block 14 (20 Q), Block 15 (20 Q), Block 16 (20 Q). Each section is timed and weighted separately. 16 blocks × up to 20 Q × 30 min (post-May-7-2026 format; pre-May-2026 was 8 × 40 × 60). Total ≤318 Q. · Official language: English.
What tools or aids are allowed during USMLE Step 2 CK?
Built-in lab values reference table (USMLE-style). Note: real exam is proctored — Wrexa Edge mirrors this with a webcam-based proctoring flow you can enable.
Is the USMLE Step 2 CK test adaptive?
No — USMLE Step 2 CK is a fixed-form (linear) test. Every candidate sees the same number of questions per section.
How many USMLE Step 2 CK mock tests does Wrexa Edge offer?
Wrexa Edge generates 50 distinct USMLE Step 2 CK variants — each with different question content, not just shuffled options — the first 3 free for everyone and 47 more with Pro. That's 16000 unique practice questions in the real test-day interface.
Is there a free USMLE Step 2 CK test series 2026?
Yes. The Wrexa Edge USMLE Step 2 CK test series for 2026 gives you 3 free full-length mock tests (50 in total) plus subject-wise and topic-wise tests — instant scoring and detailed analysis, no card required.
Are USMLE Step 2 CK previous year question–style papers included?
Every USMLE Step 2 CK mock is modelled on the official exam pattern and the style of previous years' papers — the same 320-question structure, sections and marking — so your practice mirrors the real paper you'll sit.
Which is the best free USMLE Step 2 CK mock test online?
Wrexa Edge's USMLE Step 2 CK mock test replicates the real exam interface, timing and marking scheme, with instant score, section-wise analysis and 50 fresh variants — a strong free choice for 2026 preparation.
Can I take the USMLE Step 2 CK mock test on mobile?
Yes. USMLE Step 2 CK mock tests run in any browser on mobile, tablet or desktop — no app or download needed. Start on your phone and your progress and analytics sync when you sign in.
What is the USMLE Step 2 CK syllabus?
The USMLE Step 2 CK syllabus maps to its 16 sections: Block 1 (20 Q), Block 2 (20 Q), Block 3 (20 Q), Block 4 (20 Q), Block 5 (20 Q), Block 6 (20 Q), Block 7 (20 Q), Block 8 (20 Q), Block 9 (20 Q), Block 10 (20 Q), Block 11 (20 Q), Block 12 (20 Q), Block 13 (20 Q), Block 14 (20 Q), Block 15 (20 Q), Block 16 (20 Q). Wrexa Edge's mock tests cover the complete syllabus topic by topic — see the topics-covered breakdown above — so you practise every area at real exam difficulty.
What is the eligibility for USMLE Step 2 CK?
Open to medical students and graduates of LCME/COCA-accredited U.S./Canadian schools, and to eligible international students/graduates via ECFMG — usually taken during or after the clinical clerkships. Wrexa Edge focuses on realistic USMLE Step 2 CK practice: 3 free full-length mocks in the exact exam pattern, ready whenever you are.
When is the USMLE Step 2 CK exam and how should I prepare?
Official USMLE Step 2 CK exam dates are announced by the conducting body for each cycle — check the latest notification for the current schedule. To be ready, follow a phased study plan and take full-length timed mocks; Wrexa Edge gives you 3 free USMLE Step 2 CK mocks with instant scoring so you can track your readiness week by week.

Related exams & practice tests

Candidates preparing for USMLE Step 2 CK also practise these on Wrexa Edge:

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