General Calculator Cardiology Calculator Hepatic Calculator Renal Calculator Respiratory Calculator Neurology Calculator Emergency Calculator Oncology Calculator Pediatrics Calculator Obstetrics Calculator Clinical Tools Physicians Nurses EMS Paramedics Physician Assistants Nurse Practitioners Medical Students

Home Clinical Tools Critical Care

A-a Gradient

Alveolar-arterial oxygen gradient.

Calculator

Patient Age

years

FiO2

%

PaCO2

mmHg

PaO2

mmHg

Atmospheric Pressure

mmHg

Results

Enter patient data to see calculated results.

The fastest mobile-first clinical toolkit for healthcare professionals. Evidence-based calculators and bedside tools.

Resources

All Calculators
Clinical Tools
Search

Categories

Cardiology
Emergency
Neurology
Renal
Respiratory
Hepatic
Pediatrics
Oncology
Obstetrics
General

For Clinicians

Physicians
Nurses
EMS & Paramedics
Physician Assistants
Nurse Practitioners
Students

Company

About
Privacy Policy
Terms of Service
Contact
Sitemap

© 2026 by The Media Shop, LLC. All rights reserved.

Not a substitute for professional medical judgment. Always consult a qualified healthcare provider.