CURB-65 Calculator (Pneumonia Severity)
The five-finger pneumonia triage score behind home-vs-hospital decisions.
Five bedside variables stratify community-acquired pneumonia mortality from under 1% to ~27% — elegant enough to memorise on one hand. Limitations clinicians respect: it underweights hypoxia (check SpO₂ regardless) and young patients compensate until they don't. Pandemic-era data also showed it underperforming in viral pneumonia; judgement stays in charge.
Formula
Reference aid for healthcare professionals only. Every result must be independently verified before clinical use. Never use this tool for self-medication or to replace clinical judgement.
The five-finger pneumonia triage score behind home-vs-hospital decisions. The CURB-65 Calculator (Pneumonia Severity) is a free, private curb 65 tool — every result computes instantly in your browser with no sign-up and no data upload.
About CURB-65 Calculator (Pneumonia Severity)
Five bedside variables stratify community-acquired pneumonia mortality from under 1% to ~27% — elegant enough to memorise on one hand. It applies Confusion, Urea, Respiratory rate, BP, 65+ — one point each. Use the CURB-65 Calculator (Pneumonia Severity) to get an instant, clearly-explained result with the working shown step by step — free, private and with the source method cited.
How to use CURB-65 Calculator (Pneumonia Severity)
- 1Enter your details in the CURB-65 Calculator (Pneumonia Severity) input fields above.
- 2The result updates instantly with the working and reference bands shown.
- 3Adjust any value to explore how it changes the outcome — it's free and unlimited.
Why use CURB-65 Calculator (Pneumonia Severity)?
- ✓Instant curb 65 result that recomputes as you type — no waiting, no page reloads
- ✓100% client-side: your health data never leaves your browser
- ✓Shows the actual formula and your numbers substituted in, so you can see exactly how the result is reached
- ✓Based on published, citable sources (Lim WS et al., Thorax 2003 — CURB-65 derivation/validation)
- ✓Free forever with no sign-up, account or app install
Frequently asked questions
How does the CURB-65 Calculator (Pneumonia Severity) work?+
Five bedside variables stratify community-acquired pneumonia mortality from under 1% to ~27% — elegant enough to memorise on one hand. The calculation uses the formula: Confusion, Urea, Respiratory rate, BP, 65+ — one point each. Everything runs instantly in your browser as you type — your inputs are never uploaded.
Is the CURB-65 Calculator (Pneumonia Severity) accurate, and what is it based on?+
The method is traceable to authoritative sources: Lim WS et al., Thorax 2003 — CURB-65 derivation/validation. Results are estimates — individual variation always applies, so treat the output as a well-grounded starting point.
Is the CURB-65 Calculator (Pneumonia Severity) free and private?+
Yes. It's completely free with no sign-up, and all computation happens locally in your browser, so none of your health data ever leaves your device.
Can I use this for medical decisions?+
This is a reference aid for healthcare professionals and must be independently verified. It is not for self-diagnosis or self-medication.
What can I use the CURB-65 Calculator (Pneumonia Severity) for?+
It's commonly used for curb 65, pneumonia severity, cap score. The five-finger pneumonia triage score behind home-vs-hospital decisions.
Related Health tools
Adult BMI Calculator (WHO)
Body-mass index for adults with the WHO reference bands shown neutrally, plus the substituted formula step by step.
● LiveBMI Calculator (lb & inches)
US-style BMI from pounds and inches using the ×703 conversion, with CDC adult reference ranges.
● LiveBMI Calculator for Women
BMI with reference context written for women — what the index can and cannot say about female body composition.
● Live