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CURB-65 (ext.)

CURB-65 (ext.): calculated with the published clinical method, with result interpretation. A reference tool that does not replace a doctor's advice.

ℹ Reference calculation based on the published method. It does not replace a clinical examination or a doctor's decision.

CURB-65 (ext.)

Confusion (1 = yes)
Blood ureammol/L
Respiratory rate/min
Systolic BPmmHg
Diastolic BPmmHg
Ageyears
CURB-65 (ext.)
0points
CURB-65 (ext.): calculated with the published clinical method, with result interpretation. A reference tool that does not replace a doctor's advice.
Mortality risk
<3%
Management
Outpatient treatment

More about: CURB-65 (ext.)

What it calculates

The “CURB-65 (ext.)” calculator computes CURB-65 (ext.) in points from 6 parameters: confusion (1 = yes), blood urea (mmol/L), respiratory rate (/min), systolic bp (mmHg), diastolic bp (mmHg), age (years).

Used by professionals and patients to assess health metrics, dosages, and risks.

Example calculation

With parameters Confusion (1 = yes) = 0, Blood urea = 5 mmol/L, Respiratory rate = 18 /min, Systolic BP = 120 mmHg, Diastolic BP = 75 mmHg, Age = 55 years the result is 0 points.

How to use

  1. Enter confusion (1 = yes), blood urea, respiratory rate, systolic bp, diastolic bp and age — each field above is adjustable with a slider.
  2. CURB-65 (ext.) (points) is calculated automatically as you type.
  3. Check the worked example below to see the formula applied to real numbers.
  4. Copy the result or bookmark this calculator.

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FAQ

How is BMI calculated?
BMI = weight (kg) / height (m)². Example: 70 kg / (1.75 m)² = 22.9. The WHO normal range is 18.5–24.9; below that is underweight, 25–29.9 is overweight, and 30+ is obese.
Is BMI accurate for everyone?
No. BMI does not distinguish muscle from fat, so athletes may show a high BMI with low body fat. It is also less reliable for teenagers, pregnant people, older adults, and very tall or short individuals.
What are the BMI categories?
Underweight: below 18.5. Normal: 18.5–24.9. Overweight: 25–29.9. Obese class I: 30–34.9; class II: 35–39.9; class III: 40+.
What is a better measure than BMI?
Body fat percentage, waist-to-height ratio (aim for under 0.5), and waist circumference give a clearer picture of health than BMI alone.

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