O2 Calculator Companion
Joseph Perry
About this app
- Category Utilities
- Age 10
- Updated Jul 21, 2025
- OS IOS
Editor reviews
O2 Calculator Companion is a fast, clinical utility for oxygen therapy and respiratory care. It helps healthcare professionals estimate FiO2, plan oxygen cylinder duration, and assess oxygenation indices at the bedside. Built for speed and clarity, it minimizes manual math and supports quick, informed decisions in ICU, ED, prehospital, and ward settings.
Core features
- Oxygen delivery calculators: FiO2 estimation by device and flow, cylinder duration by tank size and flow
- Oxygenation indices: P F ratio, A a gradient, CaO2 and alveolar gas equation for quick status checks
- Smart presets and units: common devices and tank sizes, unit conversions, favorites and offline access
Ideal for respiratory therapists, critical care teams, emergency clinicians, and paramedics. Keywords: oxygen calculator, FiO2 calculator, medical calculator, respiratory therapy app, ICU tool, clinical utility. This app is for professional support and education only and does not replace clinical judgment.
Screenshots
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How to use:
1. Download and open the app, then choose your preferred units and region settings if prompted.
2. From the home screen, select a calculator such as FiO2, Cylinder Duration, P F Ratio, or A a Gradient.
3. Enter the required inputs, for example device type and flow rate for FiO2, or tank size and flow for cylinder duration.
4. Review instant results along with context tips and input ranges, then adjust values as needed to compare scenarios.
5. Save to Favorites for quick access, switch units or presets in Settings, and export or share calculated results as needed.