Conversion algorithm: saturations to kPa and mm Hg

Sao2 (%)Pao2 (kPa)Pao2 (mm Hg)
9712.7–14.095–105
949.3–10.070–75
928.9–9.767–73
907.7–8.358–62
876.9–7.752–58
846.1–6.946–52
Guideline threshold for advising in-flight oxygen:
82–84<6.6<50