Fitness Tool

VO2 Max Estimator

Estimate your cardiorespiratory fitness without a lab. Choose a method, enter your numbers, and see where you rank — plus what it means for your longevity.

No running required. Uses your resting heart rate and activity level to estimate VO2 max.

Age

Resting Heart Rate (bpm)

Measure after 5 min lying still

Sex

Exercise Frequency

Dive deeper

→

VO2 Max and Longevity: The Science

Why cardiorespiratory fitness is the strongest predictor of lifespan

→

Mitochondria and Athletic Performance

How your cellular energy factories set the ceiling on your fitness

→

HRV and Your Health

The other key metric that predicts your cardiovascular fitness