SIRS Criteria
SIRS Criteria: 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.
SIRS Criteria
Body temperature°C
Heart ratebpm
Respiratory rate/min
PaCO₂mmHg
White blood cells×10⁹/L
Band neutrophils%
SIRS criteria
0of 4
SIRS
Criteria not met
More about: SIRS Criteria
What it calculates
The “SIRS Criteria” calculator computes SIRS criteria in of 4 from 6 parameters: body temperature (°C), pulse (bpm), respiratory rate (/min), paco₂ (mmHg), white blood cells (×10⁹/L), band neutrophils (%).
Used by professionals and patients to assess health metrics, dosages, and risks.
Example calculation
With parameters Body temperature = 36.8 °C, Pulse = 80 bpm, Respiratory rate = 16 /min, PaCO₂ = 40 mmHg, White blood cells = 7 ×10⁹/L, Band neutrophils = 3 % the result is 0 of 4.
How to use
- Enter body temperature, pulse, respiratory rate, paco₂, white blood cells and band neutrophils — each field above is adjustable with a slider.
- SIRS criteria (of 4) is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- 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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