CURB-65 Calculator: Assess Pneumonia Severity & Mortality Risk

Calculate CURB-65 Score

Enter blood urea nitrogen (BUN) or urea level.

Use our free CURB-65 Calculator to quickly assess the severity of community-acquired pneumonia (CAP) and predict mortality risk. This essential clinical tool helps guide treatment decisions, from outpatient management to inpatient care and ICU admission. Based on five key criteria, it provides a crucial score for patient stratification.

Formula:

The CURB-65 score is calculated by assigning one point for each of the following five criteria present in a patient diagnosed with community-acquired pneumonia (CAP):

  • Confusion (disorientation to person, place, or time, or new-onset altered mental status)
  • Urea > 7 mmol/L (or > 19 mg/dL)
  • Respiratory Rate ≥ 30 breaths/min
  • Blood Pressure (systolic < 90 mmHg or diastolic ≤ 60 mmHg)
  • 65 years of age or older (Age ≥ 65 years)

The total score ranges from 0 to 5 points. Higher scores indicate greater severity and increased mortality risk.

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