VO2 Max Calculator
Estimate running VO2 max from the distance you can cover in a 12-minute Cooper run test, using meters, kilometers, or miles.
Last updated: June 15, 2026
Your run
Results
Estimated VO2 max
51.3ml/kg/min
Avg test pace
04:17/km avg
Field context
Solid
Distance entered
2800m
Useful aerobic fitness estimate for steady running and repeat testing. Add age and sex for broader context, but use repeat tests under similar conditions for trend tracking.
VO2 max = (distance in meters − 504.9) / 44.73 Cooper field-test formula.How this calculator works
Formula
Estimated VO2 max = (distance in meters - 504.9) / 44.73.
Best use
Tracking aerobic fitness changes when you repeat the same 12-minute Cooper 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.
Sources and assumptions
- Running Toolkit methodology and sources
Documents the formula choice, unit handling, assumptions, and limits behind this calculator.
- Cooper 12-minute field test
Supports the field-test relationship used to estimate VO2 max from 12-minute run distance.
How to use it
- Warm up well and run as far as possible for 12 minutes.
- Measure the total distance in meters, kilometers, or miles.
- Enter that distance to estimate VO2 max and review broad field-test context.
- Repeat the test under similar conditions over time instead of overreading one result.
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.
- Compare Cooper test results after training blocks without needing lab equipment.
Next calculator steps
Compare VO2 max with running paceUse pace results to keep field-test fitness in practical training context.Compare fitness with race predictionsUse recent race results when you need a goal-time estimate, not only a Cooper test score.Open all running fitness calculatorsUse the hub to connect VO2 max with pace, heart-rate zones, calories, race predictions, and splits.
Frequently asked questions
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.
How do I use a Cooper test VO2 max calculator?
Run as far as possible for exactly 12 minutes, enter the measured distance, and the Cooper test VO2 max calculator estimates aerobic capacity from that field-test result.
Can runners use this VO2 max calculator?
Yes. The calculator is built around the Cooper 12-minute run test, which is a practical field estimate for runners.
How do I use this as a 12-minute run VO2 max calculator?
Run as far as possible for exactly 12 minutes, measure the distance in meters, then enter that distance 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.
Can I enter kilometers or miles for the Cooper test?
Yes. Enter the 12-minute test distance in meters, kilometers, or miles. The calculator converts the distance before applying the Cooper VO2 max formula.
Related guides
Cooper test standardsInterpret a 12-minute run test result and compare it with broad standards.VO2 max for runnersUnderstand what VO2 max explains and what race performance still depends on.VO2 max chart by ageCompare age-based VO2 max context with field-test estimates.Improve VO2 max for runningUse repeatable training and testing to improve aerobic fitness.