Free USMLE Step 1 Practice Tests (2026)
Start with the free diagnostic to see where you stand, then practice in tutor or timed mode. Full-length simulations match the real USMLE Step 1.
Diagnostics
USMLE Step 1 Practice Test 1
10 questions · 15 min10 free USMLE Step 1 practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
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USMLE Step 1 Practice Test 2
10 questions · 15 min10 free USMLE Step 1 practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testUSMLE Step 1 Practice Test 3
10 questions · 15 min10 free USMLE Step 1 practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testUSMLE Step 1 Practice Test 4
10 questions · 15 min10 free USMLE Step 1 practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testUSMLE Step 1 Practice Test 5
10 questions · 15 min10 free USMLE Step 1 practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testUSMLE Step 1 Practice Test 6
10 questions · 15 min10 free USMLE Step 1 practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testUSMLE Step 1 Practice Test 7
10 questions · 15 min10 free USMLE Step 1 practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testUSMLE Step 1 Practice Test 8
10 questions · 15 min10 free USMLE Step 1 practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testUSMLE Step 1 Practice Test 9
10 questions · 15 min10 free USMLE Step 1 practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testUSMLE Step 1 Practice Test 10
10 questions · 15 min10 free USMLE Step 1 practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testUSMLE Step 1 Practice Test 11
10 questions · 15 min10 free USMLE Step 1 practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testUSMLE Step 1 Practice Test 12
10 questions · 15 min10 free USMLE Step 1 practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testUSMLE Step 1 Practice Test 13
10 questions · 15 min10 free USMLE Step 1 practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testUSMLE Step 1 Practice Test 14
10 questions · 15 min10 free USMLE Step 1 practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testUSMLE Step 1 Practice Test 15
10 questions · 15 min10 free USMLE Step 1 practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testHow these USMLE Step 1 practice tests match the real exam
The real USMLE Step 1 has 280 questions and a 420-minute time limit. Question types: Single one-best-answer multiple-choice items with four or more lettered options (most often five), built on patient-centered clinical vignettes in paragraph or chart/tabular format. Some items require interpreting photographs, micrographs, imaging, ECGs, drawings or graphs, and some include audio findings such as heart or lung sounds. Each practice test here uses the same question formats, so you get used to how USMLE Step 1 questions are asked before test day.
The tests draw on every USMLE Step 1 content area, weighted like the official outline:
- Human Development (about 2% of the exam)
- Blood & Lymphoreticular/Immune Systems (about 11% of the exam)
- Behavioral Health & Nervous Systems/Special Senses (about 12% of the exam)
- Musculoskeletal, Skin & Subcutaneous Tissue (about 10% of the exam)
- Cardiovascular System (about 9% of the exam)
- Respiratory & Renal/Urinary Systems (about 13% of the exam)
- Gastrointestinal System (about 8% of the exam)
- Reproductive & Endocrine Systems (about 14% of the exam)
- Multisystem Processes & Disorders (about 10% of the exam)
- Biostatistics & Epidemiology/Population Health (about 5% of the exam)
- Social Sciences: Communication and Interpersonal Skills (about 7.5% of the exam)
Use tutor mode to see the explanation after each answer, or timed mode to practise at real exam pace. Every answer comes with an explanation of why it is right and why the other options are wrong.