Getting your exam cockpit ready...
Loading high-yield questions, analytics, and personalized prep signals.
Tip: Solve PYQs daily for faster UPSC CMS retention.
Loading high-yield questions, analytics, and personalized prep signals.
Crack USMLE Step 1 with First Aid-aligned MCQs, AI tutor, NBME-pattern mocks, and high-yield flashcards.
No credit card needed · 10 free AI tokens daily · Cancel anytime
10,000+
USMLE Step 1 MCQs
4.8/5
User rating
47k+
Active aspirants
First Aid
Aligned content
10,000+
USMLE Step 1 MCQs
4.8/5
User rating
47k+
Active aspirants
First Aid
Aligned content
Personalised explanations, mnemonics and clinical pearls for every USMLE question.
Previous-year questions with step-by-step solutions, sorted by subject, topic and year.
Mock tests that mirror the real exam pattern, with negative marking and real-time ranking.
Every answer links to Harrison, Bailey & Love, Ghai, Park, Nelson and other standard texts.
Daily streaks, badges, leaderboards and XP to keep you consistent for 6 months.
PWAs and an Android wrapper let you revise PYQs even without internet.
CrackCMS mock tests follow the official USMLE pattern so you practise in the exact format you'll face on exam day.
| Step 1 structure | 280 MCQs across 7 blocks (40 questions each) |
|---|---|
| Time per block | 60 minutes (with 45 min break) |
| Total time | 8 hours (including breaks) |
| Question formats | Single-best-answer, multi-step, abstract, video, audio |
| Scoring | Pass/Fail (since January 2022); numeric score reported on request |
| Eligibility | Medical student or graduate of an LCME / foreign-listed medical school |
| Medical school | Enrolled in or graduated from an LCME-accredited US/Canadian school OR a foreign school listed in WDOMS |
|---|---|
| ECFMG certification | Required for IMGs before residency match (USMLE Step 1 + Step 2 CK + OET) |
| No age limit | Apply any time after completing basic science coursework |
| Attempt limit | Maximum 4 attempts per Step (effective 2024) |
| Subject | Weight | High-yield topics |
|---|---|---|
| Pathology | High | Cell injury, Inflammation, Neoplasia, Hemodynamic disorders |
| Physiology | High | Cardiovascular, Respiratory, Renal, GI, Endocrine |
| Pharmacology | High | Autonomic, CNS, Antimicrobials, Chemotherapeutics |
| Biochemistry & Molecular Biology | High | Metabolism, Genetics, Nutrition |
| Microbiology & Immunology | High | Bacteria, Viruses, Fungi, Parasites, Immune system |
| Behavioral Science & Biostatistics | Medium | Epidemiology, Ethics, Patient safety |
| Anatomy, Histology, Embryology | Medium | High-yield anatomy with clinical correlation |
Le, Bhushan
Bible — use as your central checklist. Every CrackCMS USMLE question maps to a First Aid page.
Sattar
Best Pathology video + textbook resource for Step 1.
Sketchy
Visual mnemonics for Microbiology, Pharmacology, and Pathology.
UWorld
Closest to the real exam. Use after finishing CrackCMS subject-wise MCQs.
Ryan
Video lectures aligned with First Aid.
Lecturio
Conceptual building blocks for weak topics.
USMLE Step 1 is the first of three exams required for medical licensure in the United States. It tests understanding of basic medical sciences with emphasis on principles and mechanisms.
280 MCQs across 7 blocks of 40 questions each. Each block is 60 minutes, total 8 hours including breaks.
Yes, since January 2022 USMLE Step 1 is pass/fail. Numeric scores are still reported to the examinee on request.
For Indian medical graduates (IMGs) applying for US residency, Step 2 CK score carries more weight since Step 1 is pass/fail. A 240+ on Step 2 CK opens doors to most specialties.
Most IMGs study for 6-9 months alongside or after MBBS intern year. Dedicated study periods: 8-12 hours/day for 6-8 weeks.
No — UWorld is the gold standard. CrackCMS complements UWorld by providing First Aid-aligned explanations, AI tutor for concept gaps, and Indian-context clinical reasoning.