Convert your NBME Free 120 percentage score to a predicted USMLE Step 1 score. The Free 120 is one of the most accurate predictors when taken under exam conditions.
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The Free 120 (also known as the NBME Sample Questions) is a 120-question practice exam provided free by the NBME. It's widely considered one of the most accurate predictors of USMLE Step 1 performance, especially when taken within a week of your actual exam.
Many students report their Free 120 score closely matching their actual USMLE result, typically within 5-10 points when taken under timed conditions. For the most comprehensive prediction, use this calculator alongside our NBME offline score converter.