Free 120 Step 2 Score Conversion | USMLE Official Practice Exam Predictor 2026
Free Free 120 Step 2 CK Score Calculator — convert your USMLE Free 120 percentage correct to a predicted Step 2 CK three-digit score using the community formula: (Percentage × 1.3) + 88. Trusted by 10,000+ medical students, this tool also shows your margin against the 218 passing standard and a downloadable score report.
Free 120 Step 2 CK Calculator
Frequently Asked Questions — Free 120 Step 2 CK
What is the USMLE Free 120 for Step 2 CK?
The USMLE Free 120 Step 2 CK is an official set of 120 practice questions released by the NBME and USMLE program, freely available at usmle.org. These are real previously-used exam questions designed to reflect the current Step 2 CK format — long clinical vignettes testing diagnosis, management, and patient care decision-making. Since Step 1 moved to pass/fail in 2022, Step 2 CK has become the primary numerical score for residency applications, making the Free 120 more important than ever for score calibration.
When to take Free 120 Step 2 CK? What is the best timing?
The ideal window for the Free 120 Step 2 CK is 1–2 weeks before your exam date. Take UWSA 2 at 2–3 weeks out for your primary readiness signal, then use the Free 120 at 1–2 weeks for content calibration and wrong answer review.
How to use Free 120 Step 2 CK — the Reddit-validated workflow
Take it timed, in one sitting, with zero interruptions — untimed data has no predictive value. Do not look anything up mid-exam. Review all wrong answers the same day, identify the organ system and management principle for each miss, and look for specialty clustering to prioritize your final week.
What is a good Free 120 Step 2 CK score? What % do I need?
Community data suggests: ≥70% (84/120) → predicted ~179, borderline; ≥75% (90/120) → predicted ~186, passing signal; ≥80% (96/120) → predicted ~192, good; ≥85% (102/120) → predicted ~199, strong. The Free 120 is not a direct predictor of your 3-digit score — use UWSA 2 or NBME 15 for readiness assessment.
Free 120 Step 2 Score Conversion — percentage to 3-digit score
The community-derived conversion formula is: Score = (Percentage Correct × 1.3) + 88. It is not official — the USMLE does not publish a conversion table for Free 120. The Free 120 is widely reported to be easier than the real Step 2 CK — students typically score 5–10 percentage points higher than on NBME Step 2 CK practice forms (9-15).
Does Free 120 Step 2 give you a score? What do you get at the end?
No — the Free 120 does not give you a three-digit scaled score. You only get your percentage correct and question-by-question correct/incorrect marks. That’s why this calculator exists — enter your percentage above for an instant predicted score.
Is Free 120 Step 2 CK easier than the real exam? Is it representative?
Community consensus is that the Free 120 Step 2 CK is slightly easier than the real exam, particularly for clinical management questions. Content areas and tested concepts are highly representative — making wrong answer review very valuable — but difficulty is not a perfect match. Your NBME Step 2 CK practice forms (9-15) are a better difficulty benchmark.
Old Free 120 Step 2 vs New Free 120 Step 2 — what changed?
The USMLE updated the Free 120 Step 2 CK to align with the revised content blueprint emphasizing clinical decision-making over factual recall. Old Free 120 PDFs circulating online are no longer representative — always use the current version at usmle.org.
Where to find Free 120 Step 2 CK explanations and answer key?
The USMLE does not provide official explanations. Best community resources: Divine Intervention Podcast, Reddit r/step2 threads, HyGuru Free 120 Step 2 videos, and Bootcamp Free 120 explanations.
Free 120 Step 2 vs UWSA 2 — which matters more for final prediction?
UWSA 2 matters more for score prediction; Free 120 matters more for content calibration. Take UWSA 2 at 2–3 weeks out, then Free 120 at 1–2 weeks out for a combined score prediction and final content signal.
Can you pause the Free 120 Step 2 CK? Timer and break rules?
On the official USMLE website version, you can take breaks between the three 40-question blocks but not within a block. Take it with the timer enabled to simulate real exam conditions.
How to review Free 120 Step 2 CK wrong answers — most effective method
Review wrong answers the same day. Identify the clinical error type, look for specialty clustering, write a one-sentence management rule per wrong answer, and cross-check against your UWorld incorrects for high-yield overlap topics.
Free 120 Step 2 CK Score Calculator — Complete Guide 2026
The Free 120 Step 2 CK Score Calculator converts your percentage correct on the USMLE Free 120 into a predicted three-digit USMLE Step 2 CK score. This calculator uses a community-derived formula based on student score comparisons across multiple exam cycles.
The Formula: Free 120 Step 2 CK Score Conversion
Score = (Percentage Correct × 1.3) + 88
This formula was derived from community regression data comparing Free 120 percentages to real Step 2 CK scores. It is not official — the USMLE does not publish a conversion table for Free 120. The Free 120 is widely considered easier than the real exam; students typically score 5–10 percentage points higher on Free 120 than on NBME Step 2 CK practice forms (9-15) taken in the same period.
Free 120 Step 2 Score Conversion Table 2026
| % Correct | Wrong / 120 | Correct / 120 | Predicted Score | Performance Signal |
|---|---|---|---|---|
| 95% | 6 | 114 | ~212 | Excellent |
| 90% | 12 | 108 | ~205 | Very Strong |
| 85% | 18 | 102 | ~199 | Strong |
| 82% | 22 | 98 | ~195 | Above Average |
| 80% | 24 | 96 | ~192 | Good |
| 78% | 26 | 94 | ~189 | Solid |
| 75% | 30 | 90 | ~186 | Passing signal |
| 72% | 34 | 86 | ~182 | Moderate |
| 70% | 36 | 84 | ~179 | Borderline |
| 65% | 42 | 78 | ~172 | Below Average |
| 60% | 48 | 72 | ~166 | Needs Work |
| 55% | 54 | 66 | ~160 | High Risk |
Note: The Free 120 Step 2 CK is easier than the real exam. These predicted scores will appear lower than your actual Step 2 CK score in most cases. Your NBME practice-form or UWSA 2 score is a more accurate predictor of your real 3-digit score.
Why “Free 120 Step 2” Is a High-Search USMLE Calculator Query
With Step 1 now pass/fail since January 2022, Step 2 CK has become the primary numerical score used by residency programs to screen applicants. The national mean for Step 2 CK is approximately 249 (2024–25 data), with a minimum passing score of 218. That means every percentage point on the Free 120 Step 2 matters more than ever for residency planning.
Free 120 Step 2 CK vs NBME Practice Forms vs UWSA — Which to Use When
- 6–8 weeks before exam: NBME 9 for baseline.
- 3–4 weeks before: NBME 12 for mid-dedicated checkpoint.
- 2–3 weeks before: UWSA 2 Step 2 CK — your primary readiness and score prediction exam.
- 1–2 weeks before: Free 120 Step 2 CK — final content calibration and wrong answer review.
- Final week: NBME 15 (optional) for one more scored readiness check.
Step 2 Free 120 — Divine Intervention, HyGuru, and Bootcamp Resources
Because the USMLE does not provide explanations for Free 120 Step 2 answers, three resources have become community standards: Divine Intervention Podcast (block-by-block explanations), HyGuru Free 120 Step 2 (short video explanations), and Bootcamp Free 120 explanations (written explanations with clinical correlations). For every wrong answer, find the concept in your primary resource, write a one-sentence management rule, and tag the specialty.
Disclaimer: This calculator provides educational estimates based on community regression data. Free 120 Step 2 CK score prediction accuracy is approximate. The Free 120 is widely considered easier than the real Step 2 CK exam — actual scores are typically higher. Results are not official USMLE scores. All USMLE® trademarks belong to their respective owners. This site is not affiliated with or endorsed by the NBME or USMLE program.