1. Convert Form 15
Get the free midpoint, estimated range, and experimental pass estimate.
Step 2 CK · CCSSA Form 15
NBME 15 Score Conversion Calculator
Form 15 is preselected. Enter the Total CCSSA Score from your report; NBMEcalc keeps that official estimate as the midpoint and adds an independent planning range.
Start with one Form 15 result. The free calculator delivers the estimate before signup or payment; adding another assessment is optional and makes the trend more informative.
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NBME 15 conversion: the quick answer
Use the CCSSA total score printed on your Form 15 report. That score already estimates Step 2 CK performance, so NBMEcalc keeps it as the assessment midpoint and reports a wider planning range around it.
The model does not apply a secret Form 15 bonus or claim an official wrong-answer formula. With multiple inputs, source type and recency affect the combined result.
Use the correct input
- Enter
- Three-digit CCSSA total score.
- Do not enter
- Wrong-answer count, raw percent correct, shelf score, or a Step 1 CBSSA EPC score.
One form gives a checkpoint; several inputs give a trend
2. Add another assessment
Use a recent CCSSA or UWSA so the calculator can test whether the evidence agrees.
3. Decide whether depth is useful
The optional paid report adds the full source notes, study-plan framework, and downloadable PDF.
The current Step 2 CK passing standard is 218 for exams administered on or after July 1, 2025. Verify current standards on the official USMLE scoring page.
What makes this page different from the conversion hub?
The hub covers all NBME assessment families. This page opens with Step 2 CK, NBME, and Form 15 already selected, explains the exact compatible input, and records Form 15 traffic and conversion as an independent pilot. It does not create a different formula just to justify another URL.
NBME 15 FAQs
What should I enter for NBME 15 score conversion?
Enter the three-digit CCSSA total score shown on your official Form 15 report. Do not enter the number of wrong answers or a content-area percentage into the three-digit score field.
Is this an official NBME 15 conversion?
No. The current CCSSA Total Score already estimates Step 2 CK performance. NBMEcalc preserves that score as the assessment midpoint, then adds an independent planning range or combines it with other inputs. It is not affiliated with NBME or USMLE.
What is the current Step 2 CK passing score?
The USMLE passing standard is 218 for exams administered on or after July 1, 2025. Use the current official score report and USMLE guidance for any exam decision.
Should I use NBME 15 by itself?
A single form is a checkpoint, not a complete forecast. Add another recent comprehensive assessment or UWSA to see whether your evidence agrees and to obtain a more useful trend.