VO₂ Max
Estimate your VO₂ max — the maximum oxygen your body can use — from your age and resting heart rate. A key marker of cardiovascular fitness.
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Well above average — typical of regular endurance athletes.
Formulas use international (WHO) standards — healthy ranges are the same worldwide; only the units differ. The national context below uses U.S. data (CDC / NHANES).
What VO₂ max is
It’s the maximum volume of oxygen your body can use per minute during hard exercise, relative to your weight (ml/kg/min). Higher means better aerobic capacity and, on average, better cardiovascular health.
VitaDup estimates it with the Uth–Sørensen formula, using the ratio of your maximum to resting heart rate. It’s an estimate — an exact value needs a lab test.
How to improve it
The most effective approach combines a base of easy aerobic training (many minutes in easy zones) with some hard interval work. Improvement is possible at any age and with relatively little volume at first.
A lower resting heart rate over time usually accompanies gains in VO₂ max.
Frequently asked questions
Is this estimate accurate?
It’s a heart-rate-based estimate, useful for tracking your trend. An exact value needs a graded exercise test with gas analysis.
How do I measure resting HR well?
On waking, lying down and relaxed, count your pulse for a minute. Repeat over several days and average.
Does VO₂ max drop with age?
It tends to, but regular training slows that decline considerably.
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This tool is for general education and is not a substitute for professional medical advice.