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CURB 65 Pneumonia Score Calculator

Work out curb 65 pneumonia score instantly with clear inputs, formula shown and shareable results.

About CURB 65 Pneumonia Score Calculator

Adds the CURB-65 criteria — confusion, raised urea, respiratory rate, low blood pressure and age 65 or over — and reports the associated 30-day mortality.

Formula

CURB-65

One point each for confusion, urea >7 mmol/L, respiratory rate >=30, systolic <90 or diastolic <=60, and age >=65; mortality rises from 0.7% at 0 to about 40% at 4-5

Worked example

With the default values below, CURB 65 Pneumonia Score Calculator returns CURB-65 score of 3. Change any input above and every figure here is recalculated in your browser.

Inputs used

Criteria met from confusion, urea, respiratory rate and blood pressureaccepts 0–4
2
Ageaccepts 18–110 years
70 years

Results

CURB-65 score
3
Reported 30-day mortality
14.0%
Care setting guidance
Consider intensive care assessment
Point from age 65 or over
1

Step by step

  1. 1Values used
  2. 2CURB-65
  3. 3CURB-65 score= 3
  4. 4Reported 30-day mortality= 14.0
  5. 5Care setting guidance= Consider intensive care assessment
  6. 6Point from age 65 or over= 1

Assumptions and limits

  • The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 1 decimal place, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
  • This is an estimate for general information and not professional medical advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.

Frequently Asked Questions

What about CRB-65?

CRB-65 omits urea and is used in primary care where blood tests are not immediately available.

Does the score replace judgement?

No. Oxygenation, comorbidity and social circumstances also determine the safest care setting.

Related Calculators

CURB 65 Pneumonia Score Calculator – Calculate CURB-65 score