QUANTUM KHOR

VO2 Max Calculator

Estimate your aerobic fitness (VO2 max) from just your age and resting heart rate — no treadmill test required.

Below average

Below 30

Fair

30 – 40

Good

40 – 50

Excellent

Above 50

How is this calculated without a fitness test?

The Uth-Sørensen-Overgaard-Pedersen formula estimates VO2 max from the ratio of your maximum heart rate (from age) to your resting heart rate — no treadmill or bike test needed. It correlates well with lab-measured VO2 max, though it's an estimate, not a direct measurement.

What is VO2 max?

The maximum rate at which your body can use oxygen during intense exercise — a core measure of aerobic/cardiovascular fitness, measured in milliliters of oxygen per kilogram of bodyweight per minute.

How can I improve my VO2 max?

Consistent aerobic training, especially intervals that push your heart rate into the higher zones, is the most reliable way to raise it over weeks to months.

Quantum Khor is a wellness companion, not a medical device. It does not diagnose, treat or prevent any condition.