VO2 Max Calculator
Two lab-free estimates: resting-heart-rate ratio or the Cooper 12-minute run.
Result
VO2 max43.5 ml/kg/min
CategoryGood
Max HR used185 bpm
Percentile (35yo male ref)Average
VO2 Max Calculator — FAQs
How accurate without a lab?
±10–15% vs a masked lab test — good enough to track fitness trend. Wearables use the same resting-HR approach.
What's a good VO2 max?
Depends on age/sex — ~40+ is decent for a 35-year-old man, 35+ for women. Elite endurance athletes hit 60–80+.
Need a Custom Tool Built?
We build calculators, estimators and internal tools for businesses in the UK and North America.
Get a QuoteEmbed this VO2 Max Calculator on your site
Free to use — paste this snippet into any webpage. It auto-resizes and includes a small attribution link. Add ?theme=dark to the iframe URL for dark mode.