VO2 Max Calculator
Estimate aerobic fitness from the distance you can cover in a 12-minute Cooper run test.
Last updated: May 30, 2026
Estimated VO2 max
51.3 ml/kg/min
Uses the Cooper 12-minute field-test estimate: VO2 max = (distance in meters - 504.9) / 44.73.
Formula
Estimated VO2 max = (distance in meters - 504.9) / 44.73.
Best Use
Tracking aerobic fitness changes when you repeat the same 12-minute field test under similar conditions.
Limitations
This is not a lab VO2 max test. Pacing, motivation, surface, weather, altitude, and measurement accuracy can affect the result.
Example
A 2,800 meter Cooper test estimates VO2 max at about 51.3 ml/kg/min.
How to Use It
- Warm up well and run as far as possible for 12 minutes.
- Measure the total distance in meters.
- Enter that distance to estimate VO2 max and repeat the test under similar conditions over time.
Common Mistakes
- Starting too fast and fading before 12 minutes.
- Using a route with turns, hills, or unreliable GPS.
- Comparing tests done in very different weather or fatigue states.
Useful For
- Track aerobic fitness across a training cycle.
- Compare field-test fitness before and after base training.
- Use alongside pace and race predictor tools for a fuller view of fitness.
What is the Cooper 12-minute test?
It is a field test where you run as far as possible in 12 minutes, then use distance covered to estimate VO2 max.
Is this the same as a lab VO2 max test?
No. It is a field estimate and cannot measure oxygen consumption as directly as a lab test with gas analysis.
How can I make the estimate more consistent?
Use the same flat route or track, similar weather, a good warmup, and a reliable distance measurement each time.