PAO2 Calculator

Calculate partial alveolar oxygen pressure.

PAO2 = FiO2 × (Pb − 47) − (1.2 × PaCO2)

FiO2 (%)

Barometric Pressure (mmHg)

PaCO2 (mmHg)

Disclaimer: These calculators are for educational and clinical decision support only. Always verify calculations and apply clinical judgment. Not a substitute for professional medical advice.