USMLE Step 1 — Free Online Mock Test
7 blocks × 40 Q × 60 min = 280 total. Pass/fail. · Official language: English.
USMLE Step 1 exam at a glance
USMLE Step 1 full-length mock tests
Attempt 50 full-length USMLE Step 1 mock tests, each a distinct question set built on the real 280-question, 420-minute pattern — with instant scoring and section-wise analysis. The first 3 are free.
USMLE Step 1 key facts & eligibility
| Conducting body | USMLE program — co-sponsored by the Federation of State Medical Boards (FSMB) and the National Board of Medical Examiners (NBME) |
|---|---|
| Official website | usmle.org ↗ |
| Mode | One-day, computer-based examination taken at a Prometric test centre in an 8-hour testing session. |
| Frequency | Offered year-round by appointment during eligibility periods. |
| Scoring & marking | Step 1 is delivered in up to seven 60-minute blocks (no more than 40 items per block, and no more than 280 items in total) within an 8-hour session. Since 26 January 2022 it is reported as PASS/FAIL only — there is no three-digit score. It assesses whether examinees can apply foundational science concepts to the practice of medicine, spanning anatomy, physiology, biochemistry, pharmacology, pathology, microbiology, immunology, behavioural sciences and cross-cutting principles. |
| Score validity | The pass result becomes part of the permanent USMLE record; Step 1 must be passed to progress toward licensure. |
| Language | English. |
Who is eligible for USMLE Step 1?
Open to medical students and graduates of LCME- or COCA-accredited U.S./Canadian medical schools, and to students and graduates of eligible international medical schools who register through ECFMG.
Last verified July 2026 against USMLE Step 1, Step 1 transition to pass/fail — USMLE. Always confirm current details on the official website before you register.
USMLE Step 1 section breakdown
The USMLE Step 1 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.
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Block 1 (40 Q)
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Block 2 (40 Q)
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Block 3 (40 Q)
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Block 4 (40 Q)
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Block 5 (40 Q)
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Block 6 (40 Q)
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Block 7 (40 Q)
USMLE Step 1 scoring & marking scheme
Strategy: USMLE Step 1 has no negative marking. Attempt every question — blank answers cost you potential marks but cannot pull your score down.
Scale: USMLE Step 1 (pass/fail).
How USMLE Step 1 is conducted
- Mode
- Test format
- Backtracking
- Mark for review
Tools available during the USMLE Step 1 exam
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Lab Values
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Highlighter
Wrexa Edge renders these tools inside the mock test exactly as they appear on the real USMLE Step 1 exam — same shortcuts, same behaviour.
USMLE Step 1 time strategy
With 280 questions in 420 minutes, you have about 90 seconds per question on average. Successful candidates aim for the following pacing on each section:
- Block 1 (40 Q)
- Block 2 (40 Q)
- Block 3 (40 Q)
- Block 4 (40 Q)
- Block 5 (40 Q)
- Block 6 (40 Q)
- Block 7 (40 Q)
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 1 topics covered
Across the 50 Wrexa Edge variants of USMLE Step 1, the following topics appear most often (sample distribution from one variant):
Block 1 (40 Q)
- Lower Limb · 6
- Bacteriology · 6
- Cardiovascular · 5
- Respiratory · 5
- Immunopathology · 4
- Carbohydrate Metabolism · 3
- Inborn Errors of Metabolism · 3
- Autonomic · 2
Block 2 (40 Q)
- Lower Limb · 6
- Bacteriology · 6
- Cardiovascular · 5
- Respiratory · 5
- Immunopathology · 4
- Carbohydrate Metabolism · 3
- Inborn Errors of Metabolism · 3
- Autonomic · 2
Block 3 (40 Q)
- Lower Limb · 6
- Bacteriology · 6
- Cardiovascular · 5
- Respiratory · 5
- Immunopathology · 4
- Carbohydrate Metabolism · 3
- Inborn Errors of Metabolism · 3
- Autonomic · 2
Block 4 (40 Q)
- Lower Limb · 6
- Bacteriology · 6
- Cardiovascular · 5
- Respiratory · 5
- Immunopathology · 4
- Carbohydrate Metabolism · 3
- Inborn Errors of Metabolism · 3
- Autonomic · 2
Block 5 (40 Q)
- Lower Limb · 6
- Bacteriology · 6
- Cardiovascular · 5
- Respiratory · 5
- Immunopathology · 4
- Carbohydrate Metabolism · 3
- Inborn Errors of Metabolism · 3
- Autonomic · 2
Block 6 (40 Q)
- Lower Limb · 6
- Bacteriology · 6
- Cardiovascular · 5
- Respiratory · 5
- Immunopathology · 4
- Carbohydrate Metabolism · 3
- Inborn Errors of Metabolism · 3
- Autonomic · 2
Block 7 (40 Q)
- Lower Limb · 6
- Bacteriology · 6
- Cardiovascular · 5
- Respiratory · 5
- Immunopathology · 4
- Carbohydrate Metabolism · 3
- Inborn Errors of Metabolism · 3
- Autonomic · 2
USMLE Step 1 difficulty calibration
Elite tier. Elite-tier: among the toughest exams in its category. Most successful candidates prepare for 6-12+ months.
7 blocks × 40 Q × 60 min = 280 total. Pass/fail. · Official language: English.
Verified content — Wrexa Edge's USMLE Step 1 bank has been deeply curated with real exam-aligned content (estimated 100% syllabus coverage).
How Wrexa Edge prepares you for USMLE Step 1
- Real test-day interface
- 50 distinct variants
- Detailed analytics
- Spaced repetition (Notebook)
- Optional proctoring
- Free to start
USMLE Step 1 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.
- Systems-based study anchored in First Aid
- Physiology, pathology and pharmacology across organ systems
- Begin UWorld questions tutor-mode by system
- Work through the full UWorld QBank, reviewing every explanation
- Consolidate weak areas back into First Aid
- Add microbiology, immunology and biochemistry depth
- Take NBME self-assessments to confirm a comfortable pass
- Timed, full-length blocks to build stamina
- Target remaining weak systems
Where USMLE Step 1 can take you
A strong USMLE Step 1 result opens up these careers and higher-study paths:
- Medical licensure step
- Residency foundation
- Clinical knowledge base
- Global pathway (ECFMG)
Best books & official prep for USMLE Step 1
- First Aid for the USMLE Step 1 — Tao Le et al.
- UWorld Step 1 QBank — UWorld
- NBME Self-Assessments (CBSSA) — NBME
Official practice: Because Step 1 is now pass/fail, build broad, secure understanding rather than chasing a high number; anchor study in First Aid, drill UWorld, and confirm readiness with NBME self-assessments.
Previous-year papers: The USMLE releases official practice materials and free sample test items rather than past papers.
Frequently asked questions
- What is the USMLE Step 1 exam pattern?
- USMLE Step 1 contains 280 questions across 7 sections: Block 1 (40 Q), Block 2 (40 Q), Block 3 (40 Q), Block 4 (40 Q), Block 5 (40 Q), Block 6 (40 Q), Block 7 (40 Q). Total duration is 420 minutes (about 90 seconds per question).
- Does USMLE Step 1 have negative marking?
- No — USMLE Step 1 has no negative marking. Each correct answer is worth 1 mark, so attempt every question.
- How is USMLE Step 1 scored?
- Scaled score range: 0 to 100. USMLE Step 1 (pass/fail).
- How can I practise USMLE Step 1 online for free?
- Wrexa Edge gives you 3 free full-length USMLE Step 1 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 1?
- USMLE Step 1 is rated Elite difficulty on Wrexa Edge. Elite-tier: among the toughest exams in its category. Most successful candidates prepare for 6-12+ months. 7 blocks × 40 Q × 60 min = 280 total. Pass/fail. · Official language: English.
- How long is the USMLE Step 1 exam?
- USMLE Step 1 runs for 420 minutes total across 7 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 1?
- USMLE Step 1 is split into: Block 1 (40 Q), Block 2 (40 Q), Block 3 (40 Q), Block 4 (40 Q), Block 5 (40 Q), Block 6 (40 Q), Block 7 (40 Q). Each section is timed and weighted separately. 7 blocks × 40 Q × 60 min = 280 total. Pass/fail. · Official language: English.
- What tools or aids are allowed during USMLE Step 1?
- Built-in lab values reference table (USMLE-style). Highlight + strike-through tools for passages and answer options.
- Is the USMLE Step 1 test adaptive?
- No — USMLE Step 1 is a fixed-form (linear) test. Every candidate sees the same number of questions per section.
- How many USMLE Step 1 mock tests does Wrexa Edge offer?
- Wrexa Edge generates 50 distinct USMLE Step 1 variants — each with different question content, not just shuffled options — the first 3 free for everyone and 47 more with Pro. That's 14000 unique practice questions in the real test-day interface.
- Is there a free USMLE Step 1 test series 2026?
- Yes. The Wrexa Edge USMLE Step 1 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 1 previous year question–style papers included?
- Every USMLE Step 1 mock is modelled on the official exam pattern and the style of previous years' papers — the same 280-question structure, sections and marking — so your practice mirrors the real paper you'll sit.
- Which is the best free USMLE Step 1 mock test online?
- Wrexa Edge's USMLE Step 1 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 1 mock test on mobile?
- Yes. USMLE Step 1 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 1 syllabus?
- The USMLE Step 1 syllabus maps to its 7 sections: Block 1 (40 Q), Block 2 (40 Q), Block 3 (40 Q), Block 4 (40 Q), Block 5 (40 Q), Block 6 (40 Q), Block 7 (40 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 1?
- Open to medical students and graduates of LCME- or COCA-accredited U.S./Canadian medical schools, and to students and graduates of eligible international medical schools who register through ECFMG. Wrexa Edge focuses on realistic USMLE Step 1 practice: 3 free full-length mocks in the exact exam pattern, ready whenever you are.
- When is the USMLE Step 1 exam and how should I prepare?
- Official USMLE Step 1 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 1 mocks with instant scoring so you can track your readiness week by week.
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