USMLE Score Predictor
NBMEcalc is a free browser-based tool designed to help medical students predict their USMLE scores. The calculator co...
What USMLE Score Predictor does
NBMEcalc is a free, browser-based tool that helps medical students predict their USMLE Step 1, Step 2 CK, or Step 3 scores by combining results from NBME practice exams, UWSA simulations, the Free 120 question set, AMBOSS self-assessments, and CMS data. Users input their practice exam scores and the days since sitting for each, and the calculator outputs a predicted score with an estimated planning range and 95% confidence interval. The interface displays subject strength breakdowns, allowing students to see performance across internal medicine, surgery, and other disciplines. Because the tool requires no account signup and stores results locally, it can be used instantly for quick score estimates.
How to use the NBMEcalc USMLE Score Predictor
- 1
Select your target USMLE exam (Step 1, Step 2 CK, or Step 3) from the dropdown menu.
- 2
Choose the source for each practice exam from options including NBME CCSSA, UWSA 1/2, Free 120, or AMBOSS SA.
- 3
Enter the numeric score achieved for each practice exam and the number of days since the exam was taken.
- 4
Add multiple exam entries to build a composite prediction, then click 'Predict My Step Score'.
- 5
Review the generated predicted score, estimated range with confidence interval, and subject strength percentages displayed on the results page.
Best for
Medical students preparing for USMLE Step 1, Step 2 CK, or Step 3 who want a quick, no-signup estimate of their likely score range based on prior practice exam performance.
Limitations
- Estimated ranges are based on predictive assumptions and may not reflect actual exam day conditions.
- Results depend on the accuracy and recency of the practice exam scores entered.
- No unit switching or conversion between different scoring systems is supported.
USMLE Score Predictor FAQ
- Can I use NBMEcalc to predict my score if I only have one practice exam result?
- Yes, you can enter a single practice exam score and the days since you took it; the calculator will generate a predicted range based on that one data point, though adding multiple exams typically improves the estimate.
- Does NBMEcalc store my scores or require me to create an account?
- No signup is required; scores stay local in your browser until you choose to calculate, and the site emphasizes that no account is needed to use the core functionality.
- What is the difference between the predicted score and the estimated range shown?
- The predicted score is the single most likely outcome, while the estimated range represents a 95% confidence interval around that prediction, indicating where your actual score is likely to fall.
- Can I use NBMEcalc for Step 3 preparation, or is it only for Step 1 and Step 2 CK?
- The tool supports USMLE Step 1, Step 2 CK, and Step 3 examinations, so it can be used for Step 3 planning as well.
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