VO2 Max Calculator

It depends heavily on age and sex. Using the Cooper Institute norms, a man in his thirties is rated good from about 41 ml/kg/min and excellent from about 45; for a woman in her thirties the same ratings start around 31.5 and 35.7. Trained endurance athletes commonly exceed 60, and the highest laboratory values ever recorded sit around 90.

Run as far as you can in exactly 12 minutes on a flat track, then apply VO2 max = (distance in metres − 504.9) ÷ 44.73. Covering 2,400 m gives (2400 − 504.9) ÷ 44.73, which is about 42.4 ml/kg/min.

They are estimates with real error bars. Field equations typically land within about 10 to 15 percent of a laboratory measurement for the population they were fitted on, and further out for anyone outside it. The resting heart-rate method is the crudest of the three — it uses no exercise data at all and can easily be 15 percent or more off. Pacing, motivation, terrain, heat and how rested you were all move the result.

Yes. The Rockport test only requires walking one mile as briskly as you can, which suits people who cannot or should not run, and the resting heart-rate method requires no exercise whatsoever — though it is correspondingly less reliable.

It is generally in the same ballpark as these field tests, since watches use similar heart-rate-and-pace regressions internally. Both are estimates rather than measurements, and both are far more useful for tracking your own trend over months than for comparing yourself with someone else.

Consistent aerobic training raises it, with a mix of high-volume easy work and shorter intervals near maximum being the usual recommendation. Improvements of 10 to 20 percent over a few months are common in untrained people, and much smaller in the already well-trained. Build load gradually and get medical clearance first if you have any cardiovascular concern.