USMLE Step 1 — Free Online Mock Test

USMLE Step 1 exam at a glance

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.

• Block 1 (40 Q)
  40 questions · 60 minutes · ~90 sec/question
• Block 2 (40 Q)
  40 questions · 60 minutes · ~90 sec/question
• Block 3 (40 Q)
  40 questions · 60 minutes · ~90 sec/question
• Block 4 (40 Q)
  40 questions · 60 minutes · ~90 sec/question
• Block 5 (40 Q)
  40 questions · 60 minutes · ~90 sec/question
• Block 6 (40 Q)
  40 questions · 60 minutes · ~90 sec/question
• Block 7 (40 Q)
  40 questions · 60 minutes · ~90 sec/question

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
  Standard — practice without proctoring on Wrexa Edge, or enable optional webcam proctoring to simulate test-day conditions.
• Test format
  Linear / fixed-form — every candidate sees the same number of questions per section.
• Backtracking
  Allowed — you can revisit and change answers within a section.
• Mark for review
  Available — flag tough questions and return to them before submitting the section.

Tools available during the USMLE Step 1 exam

• Lab Values
  Built-in lab values reference table (USMLE-style).
• Highlighter
  Highlight + strike-through tools for passages and answer options.

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)
  Target ~90 sec/question. If a question takes more than 135 seconds, mark for review and move on.
• Block 2 (40 Q)
  Target ~90 sec/question. If a question takes more than 135 seconds, mark for review and move on.
• Block 3 (40 Q)
  Target ~90 sec/question. If a question takes more than 135 seconds, mark for review and move on.
• Block 4 (40 Q)
  Target ~90 sec/question. If a question takes more than 135 seconds, mark for review and move on.
• Block 5 (40 Q)
  Target ~90 sec/question. If a question takes more than 135 seconds, mark for review and move on.
• Block 6 (40 Q)
  Target ~90 sec/question. If a question takes more than 135 seconds, mark for review and move on.
• Block 7 (40 Q)
  Target ~90 sec/question. If a question takes more than 135 seconds, mark for review and move on.

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)

• Step 2 — SAH Workup · 1
• Step 2 — PE Workup · 1
• Step 2 — Pulmonary TB · 1
• Step 2 — Variceal Bleed · 1
• Step 2 — H. pylori · 1
• Step 2 — Colorectal Cancer Screening · 1
• Step 2 — Pancreatitis · 1
• Step 2 — DKA · 1

Block 2 (40 Q)

• Step 2 — SAH Workup · 1
• Step 2 — PE Workup · 1
• Step 2 — Pulmonary TB · 1
• Step 2 — Variceal Bleed · 1
• Step 2 — H. pylori · 1
• Step 2 — Colorectal Cancer Screening · 1
• Step 2 — Pancreatitis · 1
• Step 2 — DKA · 1

Block 3 (40 Q)

• Step 2 — SAH Workup · 1
• Step 2 — PE Workup · 1
• Step 2 — Pulmonary TB · 1
• Step 2 — Variceal Bleed · 1
• Step 2 — H. pylori · 1
• Step 2 — Colorectal Cancer Screening · 1
• Step 2 — Pancreatitis · 1
• Step 2 — DKA · 1

Block 4 (40 Q)

• Step 2 — SAH Workup · 1
• Step 2 — PE Workup · 1
• Step 2 — Pulmonary TB · 1
• Step 2 — Variceal Bleed · 1
• Step 2 — H. pylori · 1
• Step 2 — Colorectal Cancer Screening · 1
• Step 2 — Pancreatitis · 1
• Step 2 — DKA · 1

Block 5 (40 Q)

• Step 2 — SAH Workup · 1
• Step 2 — PE Workup · 1
• Step 2 — Pulmonary TB · 1
• Step 2 — Variceal Bleed · 1
• Step 2 — H. pylori · 1
• Step 2 — Colorectal Cancer Screening · 1
• Step 2 — Pancreatitis · 1
• Step 2 — DKA · 1

Block 6 (40 Q)

• Step 2 — SAH Workup · 1
• Step 2 — PE Workup · 1
• Step 2 — Pulmonary TB · 1
• Step 2 — Variceal Bleed · 1
• Step 2 — H. pylori · 1
• Step 2 — Colorectal Cancer Screening · 1
• Step 2 — Pancreatitis · 1
• Step 2 — DKA · 1

Block 7 (40 Q)

• Step 2 — SAH Workup · 1
• Step 2 — PE Workup · 1
• Step 2 — Pulmonary TB · 1
• Step 2 — Variceal Bleed · 1
• Step 2 — H. pylori · 1
• Step 2 — Colorectal Cancer Screening · 1
• Step 2 — Pancreatitis · 1
• Step 2 — DKA · 1

Sample USMLE Step 1 questions

A preview of real practice questions from the Wrexa Edge USMLE Step 1 bank — the same style, phrasing and difficulty you'll face on test day. Full solutions unlock free inside the mock.

These are a handful of the 14000 unique USMLE Step 1 questions across all 50 Wrexa Edge variants — start a free mock to attempt the full set with instant scoring.

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
  Our vignette skin mirrors the actual USMLE Step 1 testing software — same timer, palette, tools, and navigation.
• 50 distinct variants
  14000 unique practice questions, each variant a fresh test — not just shuffled options.
• Detailed analytics
  Scaled score, section accuracy, topic-wise heatmap, time-per-question — see where to focus after every attempt.
• Spaced repetition (Notebook)
  Wrong answers and flagged questions flow into an SM-2 spaced-repetition deck so you actually retain what you learn.
• Optional proctoring
  Browser-based face-api detection (no install) — turn it on to simulate a high-stakes environment.
• Free to start
  No credit card. Sign up, pick a variant, and your first USMLE Step 1 mock starts in under a minute.

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 offers free full-length USMLE Step 1 mock tests with instant scoring, detailed explanations, and 50 distinct variants. Sign up for free at Wrexa Edge and 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. That's 14000 unique practice questions you can attempt, all in the real test-day interface, free to start.

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