Official-source checks
Assessment families, score-report guidance, and passing standards are checked against current NBME and USMLE pages.
About NBMEcalc
An Independent Score Planning Tool
NBMEcalc combines practice inputs into a planning range. It is not an official score report, and it does not claim a validated cohort until the underlying dataset can be reproduced.
Honesty over hype
We show a model-generated planning range alongside the midpoint and explain that the range is not yet holdout-calibrated.
Independent of NBME
We build models from public conversion data and aggregated user-submitted scores. We are not affiliated with the NBME or USMLE.
Free access without data sales
The core calculator stays free. Public educational pages may be supported by clearly labelled advertising, and optional reports fund additional product features. Practice inputs are not sold or passed as ad-targeting parameters.
Algorithm transparency
The methodology and material changes are public. Claims without reproducible evidence are labelled as assumptions or removed.
Trust and review path
Check the evidence before using the estimate
These pages separate official facts from internal assumptions, show what has and has not been validated, and provide a review path for educators and readers.
Transparent About What the Model Can Do
The calculator exposes its assumptions and uncertainty. We do not claim a validated cohort until a reproducible dataset and holdout report are published.
3
Step Exams Supported
Step 1, Step 2 CK, and Step 3
6
Input Source Types
CCSSA, UWSA 1/2, Free 120, and AMBOSS
1
Public Methodology
Versioned assumptions and validation status
How we got here
A short, honest timeline. We'll keep updating this page.
- 2025 Q4
Idea & first prototype
An initial multi-source prototype was developed to compare practice-assessment results without presenting one midpoint as certain.
- 2026 Q1
Public methodology
Model assumptions, official-source checks, limitations, and material changes are documented for every visitor.
- 2026 Q2
Public launch
Free tier opens to all. Single Report and Lifetime launch with PDF delivery, multi-Step tracking, and transparent planning ranges.
- 2026 H2
Holdout validation
After enough consented outcomes are collected, publish inclusion rules, error metrics, range coverage, and a locked holdout evaluation before making accuracy claims.
Editorial controls
Evidence and Review Status
NBMEcalc currently uses an internal editorial process. We do not claim named physician review until reviewer identities and scope can be verified publicly.
Versioned model changes
Material assumption changes are documented publicly. Stored predictions keep their algorithm version.
Corrections welcome
Readers can report factual or calculation concerns. Unsupported claims are corrected or removed rather than defended.
Read the public methodology and changelog or submit a correction.
Got feedback or a partnership idea?
Reach the project at hello@nbmecalc.com.