How to use the arterial oxygen content calculator
Find the total oxygen carried in arterial blood from haemoglobin, saturation and oxygen pressure. Enter hemoglobin, arterial oxygen saturation, arterial oxygen pressure in the fields above; the arterial oxygen content is computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “arterial oxygen content”, “CaO2”, “blood oxygen carrying capacity”, “calculate arterial oxygen content”, “find arterial oxygen content”.
Formula
Variables
- hb — Hemoglobin (g/dL)
- sao2 — Arterial oxygen saturation (%)
- pao2 — Arterial oxygen pressure (mmHg)
Worked example
With hemoglobin = 15 g/dL, arterial oxygen saturation = 97 %, arterial oxygen pressure = 95 mmHg, the calculator gives arterial oxygen content ≈ 19.7915 mL O₂/dL.
Frequently asked questions
What is the arterial oxygen content calculator used for?
Find the total oxygen carried in arterial blood from haemoglobin, saturation and oxygen pressure. It helps with questions such as “arterial oxygen content”, “CaO2”, “blood oxygen carrying capacity”.
What is the formula for the arterial oxygen content calculation?
Arterial oxygen content (mL O₂/dL) = 1.34 × hb × sao2 / 100+0.0031 × pao2. Here hb is hemoglobin (g/dL), sao2 is arterial oxygen saturation (%), pao2 is arterial oxygen pressure (mmHg).
What inputs do I need for the arterial oxygen content calculator?
You need hemoglobin in g/dL, arterial oxygen saturation in %, arterial oxygen pressure in mmHg. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the arterial oxygen content calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the arterial oxygen content result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.