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Life & fun · August 25, 2026

VO2 Max Calculator by MegaCalcOnline

Free VO2 max estimator

What it does

A free web calculator that estimates VO2 max using three field-test methods: the Cooper 12-minute run, the Rockport 1-mile walk, and a heart-rate-ratio method — so you don't need a lab test or a wearable to get a reasonable estimate. Results are benchmarked against peer-reviewed FRIEND registry percentile data, so you can see where your number sits for your age and sex, not just a raw figure. Supports metric and imperial units.

Free VO2 max calculator: estimate your VO2max using the Cooper 12-minute run, Rockport 1-mile walk, or heart rate ratio method. Metric and imperial supported.

Estimate your VO2 max (cardiorespiratory fitness) using the Cooper 12-minute run, Rockport 1-mile walk, or heart rate ratio method. Metric and imperial supported. VO2 max is the maximum amount of oxygen your body can use during intense exercise, measured in millilitres of oxygen per kilogram of body weight per minute (mL/kg/min). It's the standard scientific measure of cardiorespiratory fitness. This calculator estimates it from a field test you can do without a lab — choose the Cooper 12-minute run, the Rockport 1-mile walk, or a resting/max heart rate ratio — using peer-reviewed prediction equations. Field-test estimates are less precise than a laboratory gas-exchange test, but they're a…from megacalconline.com

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