VO2 Max Calculator
Estimate aerobic fitness from the Cooper test.
Metres covered during the Cooper 12-minute run test.
Results update as you type.
How it works
VO2 max is the maximum volume of oxygen your body can use during intense exercise, and it is one of the best single measures of cardiovascular fitness. This VO2 max calculator estimates it from the Cooper test, a simple field assessment where you run as far as you can in exactly twelve minutes. Enter the distance you covered in metres and it returns your estimated maximal oxygen uptake in millilitres per kilogram per minute. This number matters because a higher VO2 max means your heart, lungs, and muscles are better at delivering and using oxygen, which supports endurance performance and is linked to long-term health. Runners, cyclists, and team-sport athletes track it to gauge aerobic conditioning and to see whether training is paying off. It also lets you compare your fitness against age and sex norms. The Cooper test works because the distance you can sustain over twelve minutes is closely tied to your aerobic capacity, so a well-paced maximal effort produces a reliable estimate without laboratory equipment. Coaches, military trainers, and recreational athletes use a VO2 max calculator to benchmark fitness cheaply, repeat the test over a season, and set realistic endurance goals.
VO2 max = (distance − 504.9) ÷ 44.73
The Cooper test links how far you run in twelve minutes to your maximal oxygen uptake, because covering more ground demands your body deliver and use more oxygen per minute. Subtracting 504.9 sets the baseline distance a minimal effort would cover, and dividing by 44.73 scales the remaining metres into millilitres of oxygen per kilogram of bodyweight each minute, the standard unit for aerobic capacity.
Source:Cooper test (VO2 max)
We review all our tools from time to time to ensure accuracy.
Worked example
How to use this calculator
- 1
Enter your values
Enter distance in 12 minutes.
- 2
Adjust the options
Fine-tune any options to match your situation.
- 3
Read your result
VO2 max updates instantly as you type — no button to press.
Frequently asked questions
How do I perform the Cooper test correctly?
Warm up thoroughly, then run as far as you can in exactly twelve minutes on a flat, measured course such as a running track. Pace yourself so you finish strong rather than fading early, and record the total distance covered in metres. Accurate distance measurement matters, so a marked track or a reliable GPS watch is ideal. Enter that distance to estimate your maximal oxygen uptake.
What is a good VO2 max value?
Good values depend heavily on age and sex. For young adult men, figures above 50 ml/kg/min are considered good and elite endurance athletes can exceed 70, while for women the comparable ranges sit somewhat lower. VO2 max naturally declines with age, so always compare your result against norms for your own age group and sex rather than a single universal threshold.
How accurate is the Cooper test estimate?
The Cooper test gives a reasonable field estimate but is less precise than a laboratory test that measures the oxygen in your breath directly. Its accuracy depends on pacing, motivation, terrain, and weather, so an inconsistent effort skews the result. For tracking your own progress it is very useful because the same person on the same course produces comparable numbers, revealing genuine changes in fitness.
How can I improve my VO2 max?
Regular aerobic training raises VO2 max, and interval work is especially effective. Alternating hard efforts near your maximum with recovery periods pushes your cardiovascular system to adapt, while steady endurance runs build the aerobic base that supports it. Consistency over weeks matters more than any single session. Retesting with the Cooper test every four to six weeks lets you confirm that your training is producing measurable gains.
What units is VO2 max measured in?
VO2 max is expressed in millilitres of oxygen consumed per kilogram of bodyweight per minute, written ml/kg/min. Reporting it relative to bodyweight allows fair comparison between people of different sizes, since a larger person naturally uses more total oxygen. This calculator returns the value in those standard units so you can compare your result directly against published fitness tables and your own previous tests.