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Arterial Oxygen Content (CaO₂) Calculator

CaO₂ = 1.34 · Hb · SaO₂ + 0.003 · PaO₂ (mL O₂ per dL).

Compute the arterial oxygen content CaO₂ — the total volume of O₂ carried per 100 mL (dL) of arterial blood — from haemoglobin, arterial saturation, and dissolved O₂: CaO₂ = 1.34·Hb·SaO₂ + 0.003·PaO₂. Reports the bound (haemoglobin), dissolved, and total components.

Priya Venkatesan By Priya Venkatesan
Published Last reviewed 1 min read

Inputs

g/dL
mmHg

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

CaO₂ = 1.34·Hb·SaO₂ + 0.003·PaO₂ (mL O₂ / dL).

In depth

Compute the arterial oxygen content CaO₂ — the total volume of O₂ carried per 100 mL (dL) of arterial blood — from haemoglobin, arterial saturation, and dissolved O₂: CaO₂ = 1.34·Hb·SaO₂ + 0.003·PaO₂. Reports the bound (haemoglobin), dissolved, and total components.