NBME 10 to Step 2 CK conversion

Q: How do I convert my NBME 10 percent correct to a score?

Enter your raw percent correct on NBME 10 above and the tool converts it to the 3-digit NBME 10 score, then to a predicted Step 2 CK score. It is calibrated on real reports that listed both a percent and a score, and cross-checked against published conversions.

Based on 1,866 real score reports that included an NBME 10 result. The actual Step 2 score was about 13 points higher than the NBME 10 score, on average. Used alone, an NBME 10 score predicts the real result with a typical error of about ±6.5 points. Combining multiple tests usually reduces the error.

Your NBME 10 score→—

Not sure what your 3-digit NBME 10 score is? Convert from % correct →

Each dot is one real report: their NBME 10 result against the Step 2 CK score they went on to get. Hover or tap a dot to see that person's full test list. r = 0.68, n = 1,818.

The calculator assumes the test was taken about 30 days before the exam, the typical timing in the underlying reports. Taking it closer to test day shifts the prediction; the main predictor uses your exact timing and every other test you have taken.

Common questions

Does NBME 10 underpredict your Step 2 score?

In the collected score reports, NBME 10 underpredicted the actual score by about 13 points on average. The conversion accounts for that average difference.

How accurate is NBME 10 alone at predicting Step 2?

A single NBME 10 score predicts the real result with a typical error of about ±6.5 points. The main predictor combines several tests, which usually reduces the error.

How do I convert my NBME 10 percent correct to a score?

Enter your raw percent correct above. NBME 10 has 200 questions, so each one is worth about half a percent; the converter maps your percent to the 3-digit NBME 10 score (about 2.2 points per percent, calibrated on real reports and cross-checked against published conversions) and then to a predicted Step 2 CK score.

Convert NBME 10 % correct to a 3-digit score

Took NBME 10 offline and only have a raw percent correct? Estimate your 3-digit form score below — it also fills into the calculator at the top of the page, so you still get a Step 2 prediction.

Your NBME 10 % correct→—

Calibrated on real reports that listed both a percent and a 3-digit NBME 10 score, blended with published conversions (typically within about ±3 points). Convert a different form →

Combine your scores

Combine your practice scores and test dates in the full predictor. Open the predictor →

Charts & guides

Browse the score analyses, study-data pages, and assessment converters.

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