Pulmonology · Emergency Medicine

CRB-65 Score calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Confusion (acute)Respiratory Rate ≥ 30Low Blood PressureAge ≥ 65

Result

CRB-65: score 0

Interpret only within the cited source population and criteria; use alongside complete clinical assessment.

Formula inputs

Confusion (acute)
Respiratory Rate ≥ 30
Low Blood Pressure
Age ≥ 65

Primary source

British Thoracic Society CAP guideline (CRB-65). Thorax. DOI: 10.1136/thx.2008.110072. PMID: 19060031. Scope: CRB-65 = confusion, RR≥30, low BP (SBP<90 or DBP≤60), age≥65 (1 point each); blood urea omitted versus CURB-65. (2009)

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