Curb
Result
Curb — free online calculator.
Formula
- Curb calculates its result from Confusion (0/1), Urea >7 mmol/L (0/1), Respiratory rate ≥30 (0/1), Low blood pressure (0/1), Age ≥65 (0/1). It uses the formula CURB-65: Confusion + Urea + RR + BP + Age ≥65. Each = 1 pt. 0–1: outpatient; ≥3: hospital.. Change any input to recalculate the result instantly. This is an informational calculation and is not medical advice.
- The main inputs are Confusion, Urea >7 mmol/L, Respiratory rate ≥30, Low blood pressure, Age ≥65. Enter them in the units and format shown in the calculator.
- Use the measurement units shown beside each field. The result is an estimate and should be interpreted in context.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Curb
- Confusion: 0 0/1
- Urea >7 mmol/L: 0 0/1
- Respiratory rate ≥30: 0 0/1
- Low blood pressure: 0 0/1
- Age ≥65: 0 0/1
Using Confusion (0/1) = 0, Urea >7 mmol/L (0/1) = 0, Respiratory rate ≥30 (0/1) = 0, Low blood pressure (0/1) = 0, Age ≥65 (0/1) = 0, the calculated result is Score: 0 | Band: Low.
Sample result: Calculating…
Frequently asked questions
What does the Curb calculate?
Curb — free online calculator.
Which values should I enter?
Enter Confusion, Urea >7 mmol/L, Respiratory rate ≥30, Low blood pressure, Age ≥65 using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: CURB-65: Confusion + Urea + RR + BP + Age ≥65. Each = 1 pt. 0–1: outpatient; ≥3: hospital..
Why might my result differ from another source?
Results can differ because measurement methods, rounding and assumptions vary. This calculator is an estimate and is not a medical diagnosis.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.