Keep the form set to NBME 13
This page opens with Step 2 CK, NBME, and Form 13 already selected. Keeping the correct form matters because each self-assessment has its own curve and question count.
NBME 13 Step 2 CK tool
NBME 13 Score Conversion Calculator
Convert NBME 13 wrong answers or percent correct into an estimated Step 2 CK score range. Use the result as a study-planning signal, not an official NBME or USMLE score report.
- NBME 13
- Default form
- 200
- Question count used
- 218
- Current Step 2 CK passing score
NBME 13 calculator
Free NBME 13 Score Converter
The calculator is preset to Step 2 CK NBME 13. Enter your missed-question count or percent correct to see an estimated three-digit score and interpretation.
Estimated Step 2 CK score
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Estimated range
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Readiness zone
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Important limitation
NBME 13 Conversion Is an Estimate
This independent NBME 13 score conversion tool uses a practical conversion model for study planning. It is not affiliated with NBME, USMLE, FSMB, ECFMG, or UWorld, and it should not replace official reports or school guidance.
How to use it
How the NBME 13 Score Conversion Calculator Works
Searchers looking for NBME 13 score conversion usually want a fast answer first, plus enough context to decide whether the result is reassuring, borderline, or below target.
Enter wrong answers or percent correct
If your review notes show missed questions, enter that count. If you only know your percent correct, switch the input mode and the tool will convert it using the 200-question NBME 13 total.
Read the range, not only one score
The displayed score is paired with a range because online conversion models cannot reproduce every official scoring detail. Treat a narrow pass margin as a prompt for another timed assessment.
Compare with the 218 passing line
For exams administered on or after July 1, 2025, the current Step 2 CK minimum passing score is 218. Results near that line deserve extra caution.
Use the result with your trend
NBME 13 is more useful when compared with NBME 9-12, NBME 14-16, UWSA, Free 120, and recent timed question blocks. A consistent trend is stronger than one isolated result.
Plan the next study block
After calculating, tag missed questions by medicine, surgery, pediatrics, OB/GYN, psychiatry, ethics, and biostatistics so the estimate turns into an actionable review plan.
Examples and edge cases
NBME 13 Score Conversion Examples
Use these examples to understand the input and output before relying on a score estimate.
Example: 42 wrong answers
Entering 42 wrong answers on NBME 13 produces an estimated Step 2 CK score near the mid-250s with a range around it. That is usually above the passing line, but the final decision should still consider timing and trend.
Example: 72% correct
For NBME 13, 72% correct is treated as about 56 missed questions out of 200 before conversion. Percent mode is helpful when your notes do not include an exact missed-question count.
Borderline results
If the estimate or range overlaps 218, avoid using one conversion as a scheduling decision. Review weak systems and confirm with another recent NBME or UWSA.
High scores still need context
A strong NBME 13 result is more reliable when the exam was timed, uninterrupted, and taken close to your actual Step 2 CK date. Untimed review sessions can inflate confidence.
Comparison table
NBME 13 Inputs and Related Step 2 CK Conversions
The table clarifies what the NBME 10 calculator accepts and when to use nearby tools.
| Use case | Input | Best next step |
|---|---|---|
| NBME 13 wrong-answer conversion | 0-200 missed questions | Use this page when your review screen shows the number of missed items. |
| NBME 13 percent correct | 0-100 percent correct | Use percent mode when you only have a percentage and want a fast Step 2 CK estimate. |
| Other Step 2 CK NBME forms | NBME 9, 10, 11, 12, 14, 15, or 16 | Use the broader Step 2 CK calculator when the assessment is not NBME 13. |
| UWSA comparison | UWSA 1, UWSA 2, or UWSA 3 | Compare NBME 13 with a UWSA result when your score trend is mixed. |
Official context
Official Sources for Step 2 CK and NBME Context
These references support the score-reporting and self-assessment context around this independent calculator.
USMLE
Step 2 CK Exam Information
Official Step 2 CK exam and score-reporting information.
USMLE
Examination Results and Scoring
Official scoring and passing-standard context for USMLE exams.
NBME
Comprehensive Clinical Science Self-Assessment
Official NBME self-assessment page for Step 2 CK readiness.
Related tools
Compare NBME 13 With Related Calculators
Use these pages when you need a broader Step 2 CK calculator, NBME 10 comparison, UWSA comparison, or Free 120 estimate.
NBME 10 FAQ
FAQ About NBME 13 Score Conversion
Is this NBME 13 score conversion official?
No. It is an independent educational estimate and is not affiliated with NBME or USMLE. Always treat official score reports as the primary source.
Can I use percent correct for NBME 13?
Yes. Switch to percent correct and enter a value from 0 to 100. The tool converts that percentage into an estimated missed-question count before calculating.
How many questions does NBME 13 use in this calculator?
This calculator uses a 200-question total for NBME 13, which lets it convert percent correct into wrong answers.
What passing score should I compare my NBME 13 result with?
For Step 2 CK exams administered on or after July 1, 2025, the current minimum passing score is 218.
Should I use NBME 13 or a newer NBME form?
NBME 13 can be useful for trend review, but a newer timed NBME taken closer to test day may be more relevant for final scheduling.
Why does the calculator show a score range?
A range reflects the uncertainty of online conversion models, form difficulty, and test-day variation. Use it to guide decisions instead of relying on one point estimate.
What should I do if my NBME 13 estimate is borderline?
Review missed questions by system and discipline, build a score buffer, and confirm readiness with another recent NBME or UWSA before making a final exam-date decision.