Predict Your USMLE Step 2 CK Score
Pick your exam below and enter your practice scores for an instant, research-anchored readiness estimate. Free — no account or signup required.
Disclaimer: This USMLE Step 2 CK score predictor provides an estimate based on anonymized, verified student data. It is NOT affiliated with the National Board of Medical Examiners (NBME), USMLE, UWorld, or any official organization. Individual results vary based on study habits, test-day performance, and other factors. Use this prediction as one data point in your preparation strategy alongside NBME self-assessments and UWorld practice.
Why Trust USMLE Predictor?
Built on 5,039 verified student score reports (2022–2026)
- 3-method ensemble algorithm: KNN (40%) + Weighted Averages (35%) + Regression (25%)
- NBME Form 14: r = 0.92 correlation
- UWSA 2: r = 0.89 correlation
Preparing for Step 1? Check your readiness with our Step 1 Pass Probability Calculator.
How accurate is the Step 2 CK score predictor?
This free tool predicts your USMLE Step 2 CK score from your NBME, UWSA, UWorld, or Free 120 practice scores using a 3-method ensemble trained on 5,039 verified student outcomes. It reaches a Pearson correlation of r = 0.92 with NBME Form 14, and 80% of predictions land within ±5–7 points of the real Step 2 CK score.
| Practice exam | Correlation (r) | Typical accuracy |
|---|---|---|
| NBME Form 14 | 0.92 | ±5–7 points |
| UWSA 2 | 0.89 | ±6–8 points |
| NBME Form 13 | 0.88 | ±6–9 points |
| Free 120 | 0.85 | ±8–10 points |
Frequently asked questions
How accurate is the USMLE Step 2 CK score predictor?
USMLEPredictor.com achieves a Pearson correlation of r = 0.92 with NBME Form 14 inputs, with 80% of predictions within ±5–7 points of the actual USMLE Step 2 CK score. This is based on 5,039 verified student score reports collected from 2022 to 2026.
Which practice exams can I use to predict my Step 2 CK score?
You can enter scores from NBME practice forms (Forms 9–32), UWSA 1, UWSA 2, and Free 120. Using multiple scores together increases prediction accuracy. NBME Form 14 and UWSA 2 are the strongest individual predictors.
Is USMLE Predictor free to use?
Yes. USMLEPredictor.com is completely free. No account, login, or subscription is required. Enter your practice exam scores and receive your predicted Step 2 CK score instantly.
How is USMLEPredictor different from the Reddit score predictor?
USMLEPredictor.com is built on 5,039 verified, document-confirmed score reports and uses a 3-method ensemble algorithm (K-Nearest Neighbors, Weighted Averages, and Per-Form Regression). The Reddit predictor relies on self-reported, unverified data and has not been updated since 2022.
Is USMLEPredictor affiliated with NBME or the official USMLE program?
No. USMLEPredictor.com is an independent tool built by medical educators and data scientists. It is not affiliated with, endorsed by, or officially connected to NBME or the USMLE program.
Can I predict Step 1 or Step 3 scores too?
Yes. Both the Step 1 (Pass/Fail) predictor and the Step 3 score predictor are available now on USMLEPredictor.com.
Last updated: July 2026