VO2 Max Calculator

VO2 max is the maximum rate at which your body can consume oxygen during intense exercise. It is expressed in milliliters of oxygen per kilogram of body weight per minute (ml/kg/min) and is the gold standard measure of aerobic fitness.

The Uth-Sorensen formula using the HRmax/HRrest ratio correlates well with laboratory VO2 max tests (r=0.96 in the original study). It is a reliable field estimate but individual variation exists. A resting HR measured over several mornings improves accuracy.

Measure your resting heart rate first thing in the morning before getting out of bed. Count your pulse at the wrist or neck for 60 seconds. Normal range is 60-100 bpm; trained athletes may have a resting HR of 40-60 bpm.

A VO2 max above 50 ml/kg/min is considered excellent for men, and above 41 for women. Elite endurance athletes often exceed 70 ml/kg/min. Average values decline with age, so fitness categories are age-adjusted.

Yes. High-intensity interval training (HIIT) and sustained aerobic exercise are the most effective methods. Improvements of 10-20% are typical with consistent training over several months.

Women have a lower average VO2 max than men due to differences in hemoglobin concentration, heart size, and body composition. The fitness category tables are normed separately for each gender to give a meaningful relative assessment.