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VO2 Max Calculator

Estimate your VO2 max (maximal aerobic capacity) from the Cooper test, Rockport walking test, or heart rate reserve method.

42.4

mL/kg/min (VO2 max)

Excellent

Fitness level

Fitness Categories (VO2 max)

< 25 mL/kg/minPoor
25–34 mL/kg/minFair
35–42 mL/kg/minGood
43–52 mL/kg/minExcellent
> 52 mL/kg/minSuperior

How VO2 max is calculated

VO2 max measures the maximum oxygen your body can use during intense exercise, in mL/kg/min. The Cooper 12-minute run test estimates VO2 max from the distance covered. The Rockport Walking Test uses walk time, heart rate, age, and weight. The Heart Rate Reserve method uses the ratio of max to resting heart rate.

Private & free — this tool runs entirely in your browser.

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