What is a good VO2 max?

It depends on age and sex. As a rough guide, a fit adult male in their 30s is around 40–47 ml/kg/min and a fit female around 33–40 ml/kg/min. Elite endurance athletes often exceed 60. The calculator rates your result against age-and-sex norms.

How accurate is the resting heart rate method?

It is a quick estimate based on the ratio of maximum to resting heart rate, so it is less precise than a field or lab test. The Cooper and Rockport tests are generally more accurate because they measure real exercise performance.

No. Every calculation runs in your browser and nothing is sent to a server.

VO2 Max Calculator — Gera Tools

Estimate your VO2 max in your browser

VO2 max is the maximum rate at which your body can take in and use oxygen during intense exercise, measured in millilitres of oxygen per kilogram of body weight per minute (ml/kg/min). It is one of the best single markers of cardiovascular fitness.

This calculator offers three estimation methods — a resting heart rate ratio that needs no exercise, the Cooper 12-minute run test, and the Rockport 1-mile walk test — then rates your result against age-and-sex norms. Everything runs locally in your browser, so your numbers never leave your device.