VO2 Max Calculator

VO2 max is the maximum volume of oxygen (in millilitres) your body can use per kilogram of body weight per minute during maximal exercise. It's the most widely used measure of aerobic fitness and cardiovascular health.

For untrained adults: below 35 ml/kg/min is poor, 35–45 is average, 45–55 is good, and above 55 is excellent. Elite endurance athletes often exceed 70 ml/kg/min. Norms differ by age and sex — younger people and men typically have higher values.

Measure your resting heart rate first thing in the morning before getting out of bed. Lie still and count your heartbeats for 60 seconds. A heart rate monitor or fitness tracker gives a more consistent reading over multiple days. A healthy resting HR is typically 60–80 bpm.

The Uth-Sørensen formula gives a reasonable estimate — studies show it correlates well with lab-measured VO2 max (r ≈ 0.82). For a true reading, you'd need a graded exercise test (VO2 max test) on a treadmill or cycle ergometer with gas analysis equipment.

Yes. VO2 max is highly trainable. High-intensity interval training (HIIT) and long steady-state aerobic exercise both improve it. Studies show 8–12 weeks of consistent cardio training can raise VO2 max by 10–25% in sedentary individuals.

Yes, VO2 max declines roughly 1% per year after age 25 in sedentary people. Regular aerobic exercise significantly slows this decline. Active 60-year-olds can have higher VO2 max values than sedentary 30-year-olds.

Endurance sports benefit most: marathon running, cycling, cross-country skiing, triathlon, and rowing. World-class cyclists like Tadej Pogačar have measured VO2 max values above 90 ml/kg/min. Team sports like football and basketball also benefit from higher aerobic capacity.

Beyond athletic performance, a higher VO2 max is linked to lower risk of cardiovascular disease, type 2 diabetes, and all-cause mortality. Even moving from the 'poor' to 'fair' fitness category has a significant health impact — some studies show a 15–20% reduction in mortality risk.

VO2 max is the ceiling of your aerobic capacity — the maximum oxygen you can use. Lactate threshold is the intensity at which lactic acid begins to accumulate faster than it can be cleared. Well-trained athletes can sustain exercise close to their lactate threshold for long periods, even if their VO2 max isn't elite.

A lower resting heart rate generally indicates a more efficient heart — it pumps more blood per beat (higher stroke volume). This is why endurance athletes often have resting HRs of 40–50 bpm. In the formula VO2max = 15 × (HRmax / HRrest), a lower resting HR directly increases the estimated VO2 max.