Oxygenation Index Calculator

Free calculate oxygenation index (OI). This is an educational tool only - always consult a healthcare provider.

Ventilator Parameters

Enter as decimal (e.g., 0.6 for 60%)

Results

Enter ventilator parameters to calculate OI

About Oxygenation Index

  • • OI = (MAP × FiO₂ × 100) / PaO₂
  • • <5: Mild respiratory failure
  • • 5-15: Moderate respiratory failure
  • • 15-25: Severe respiratory failure
  • • >25: Very severe, consider ECMO
  • • Used in pediatric critical care