// multi-utility computation suite · offline · instant · precise
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health.respiratory-failure-pao2-fio2 Calculator
Calculates the PaO₂/FiO₂ ratio and classifies ARDS severity per Berlin Definition (Mild ≥200, Moderate 100–199, Severe <100). PaO₂/FiO₂ below 300 defines respiratory failure; the Berlin ARDS thresholds guide ventilator strategy and prone positioning decisions.
Inputs
Pao2 Mmhg
Reference formula or conversion factor shown for context.
Fio2 Pct
Reference formula or conversion factor shown for context.
Altitude M
Reference formula or conversion factor shown for context.
Results
P/F ratio (PaO₂/FiO₂)
The proportional relationship between two quantities.
Berlin ARDS classification
Category assigned based on where the computed value falls on a defined scale. Check which standard or guideline defines these boundaries.