VO₂ Max Calculator
VO₂ max is the gold-standard measure of aerobic fitness — how much oxygen your body can use during hard exercise. Estimate it without a lab test using just your age and resting heart rate.
VO₂ Max Calculator
VO₂ max is the gold-standard measure of aerobic fitness — how much oxygen your body can use during hard exercise. Estimate it without a lab test using just your age and resting heart rate.
Measure your pulse at rest, ideally just after waking.
- Below average
- Fair
- Good
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- Superior
- Estimated max heart rate
- 190 bpm
- Resting heart rate
- 60 bpm
Uses the Uth–Sørensen estimate: VO₂ max ≈ 15.3 × (max HR ÷ resting HR). Healthy ranges depend on age and sex — treat the category as a general guide.
This is an educational estimate, not medical advice. Consult a qualified professional.
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How this estimate works
This tool uses the Uth–Sørensen "Heart Rate Ratio Method": VO₂ max ≈ 15.3 × (maximum heart rate ÷ resting heart rate). Maximum heart rate is estimated as 220 − age, and a lower resting heart rate — a hallmark of good fitness — produces a higher VO₂ max.
The result is expressed in millilitres of oxygen per kilogram of body weight per minute (ml/kg/min). It’s a convenient estimate that needs no exercise test, which makes it easy to track over time.
What your number means
Higher VO₂ max means your heart, lungs and muscles deliver and use oxygen more efficiently. As a general guide for adults, under 30 is below average, 40–50 is good, and above 60 is found in well-trained endurance athletes. Healthy ranges shift with age and differ between men and women, so compare yourself mainly to your own trend.
VO₂ max is strongly linked to long-term health: higher cardiorespiratory fitness is associated with lower risk of heart disease and death from all causes.
Improving your VO₂ max
The most effective way to raise VO₂ max is regular aerobic training, especially interval work that pushes you close to your maximum heart rate, balanced with longer steady sessions. Consistency over months is what moves the number.
Because this method relies on an accurate resting heart rate, measure your pulse first thing in the morning before getting up, ideally averaged over a few days. As your fitness improves and your resting heart rate falls, your estimated VO₂ max will rise.
Frequently asked questions
What is a good VO₂ max?
It varies with age and sex, but as a general guide for adults, 40–50 ml/kg/min is good and above 60 is excellent. Compare your result mainly against your own progress over time.
How accurate is the heart-rate VO₂ max estimate?
The Uth–Sørensen method is a useful, non-exercise estimate but less precise than a lab test. Its accuracy depends heavily on an accurate resting heart rate measurement.
How can I improve my VO₂ max?
Regular aerobic exercise — particularly interval training near your maximum heart rate, combined with steady endurance work — raises VO₂ max over weeks and months of consistent training.
Sources & references
Not medical advice. This result is an educational estimate from HealthyLifeStyles (Trusted Wellness), based on population formulas — not a diagnosis or treatment. Always consult a qualified healthcare professional about your health.
https://www.healthylifestyles.com/tools/vo2-max-calculator