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VO2 Max Calculator
Estimate your VO2 max (aerobic fitness) with the Cooper 12-minute run test or the Rockport 1-mile walk test. A simple way to track your fitness over time.
VO2 max estimate
VO2 max is a measure of aerobic fitness: how much oxygen your body can use during hard exercise. Estimate it with a simple field test.
Estimated VO2 max
✅ Rules last checked:
📚 Official sources: WHO: Physical activity fact sheet
We build every tool from the official rules and re-check them when they change. Always confirm with the official source before you rely on a result.
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Questions people ask
What is VO2 max?+
The most oxygen your body can use during hard exercise, in ml per kg per minute. It's a common measure of aerobic fitness.
How accurate are these tests?+
They're estimates, usually within about 10–15% of a lab test. Use the same test each time to track progress.