Heart Rate calculator

VO₂ Max
Calculator

Estimate aerobic capacity from a 12-minute Cooper field test. Enter the distance covered in 12 minutes to estimate aerobic capacity.

100% privateInstant resultsNo sign-up
1Enter your details

Calculate your result

Use realistic, recent measurements for the most useful estimate.

100% privateInputs stay in this browserInstant resultsCalculated in real timeNo sign-upFree to use
2Your result
VO₂ MaxREADYStart with the form

Your result will appear here

Complete the form and select “Calculate result.” Your measurements never leave this page.

Educational estimate only—not medical advice.
Understand your result

How your VO₂ Max estimate is created

A transparent overview of the inputs, method, and appropriate interpretation.

Evidence-informed Browser based
How it works

About this VO₂ Max estimate

It converts distance covered in twelve minutes into an estimated maximal oxygen-uptake value for aerobic-fitness tracking.

Cooper 12-minute field-test equation
12-minute distanceCooper equation=Estimated VO₂ Max
  1. 01Enter details
  2. 02Review inputs
  3. 03Use the estimate
Private by designNo account requiredInputs are not stored
Common questions

VO₂ Max Calculator FAQ

Clear answers to help you understand and use your estimate.

01Is the VO₂ Max Calculator free and private?

Yes. It is free, runs in your browser, requires no account, and does not store the measurements you enter.

02Can I use this result as medical advice?

No. This result is an educational estimate, not a diagnosis or treatment recommendation. A qualified professional can interpret it within your complete health and training context.

03Why might my VO₂ Max result differ from a real-world result?

Pacing, weather, terrain, motivation, GPS accuracy, running economy, and test familiarity can alter the estimate.

04How often should I recalculate VO₂ Max?

Enter a new result when you complete another comparable twelve-minute test. Choose test timing with your training plan and health context in mind.