Blood Oxygen Levels — Normal SpO2 Range & What It Means
Blood oxygen level, or SpO2, measures the percentage of hemoglobin in your blood carrying oxygen. It is one of the most critical vital signs — a window into your respiratory and cardiovascular health, and a key marker of longevity and physical performance.
SpO2 Level Interpreter
Enter your SpO2 reading from a pulse oximeter to get an instant interpretation.
