VO2 Max Calculator (Cooper 12-Minute Run Test)
VO2 max is the gold standard measure of cardiovascular fitness. The Cooper 12-minute run test, published by Dr. Kenneth Cooper in the Journal of the American Medical Association in 1968, provides a practical field estimate of VO2 max without laboratory equipment. You run as far as possible in 12 minutes on a flat surface, and the total distance in meters is used in the formula: VO2max = (distance - 504.9) / 44.73. Enter the distance you covered in meters (for reference, a standard athletics track is 400 meters per lap) to estimate your VO2 max in mL/kg/min.
Cooper test VO2 max formula
VO2max (mL/kg/min) = (distance in meters - 504.9) / 44.73
This equation was validated by Cooper (1968) against treadmill VO2 max tests in military personnel. For a distance of 2,800 m: VO2max = (2,800 - 504.9) / 44.73 = 2,295.1 / 44.73 = 51.30 mL/kg/min. The formula is applicable to adults; separate norms exist for children. Results below 20 mL/kg/min or above 80 mL/kg/min may indicate measurement error or exceptional fitness.
VO2 max norms for adults (approximate)
- Very poor (men): Below 28 mL/kg/min. Very poor (women): Below 24 mL/kg/min.
- Poor: Men 28 to 38; Women 24 to 35 mL/kg/min.
- Average: Men 38 to 48; Women 35 to 45 mL/kg/min.
- Good: Men 48 to 56; Women 45 to 52 mL/kg/min.
- Excellent: Men above 56; Women above 52 mL/kg/min.
VO2 max calculator: frequently asked questions
What is the Cooper 12-minute run test?
The Cooper test, developed by Dr. Kenneth Cooper in 1968, requires you to run as far as possible in exactly 12 minutes on a flat surface. The distance covered is used in a simple formula to estimate your VO2 max: VO2max = (distance in meters - 504.9) / 44.73. The test is widely used in military, sports, and educational fitness assessments.
What is VO2 max?
VO2 max is the maximum rate at which your body can consume oxygen during maximal exercise, expressed in milliliters of oxygen per kilogram of body weight per minute (mL/kg/min). It is the gold standard measure of aerobic fitness. Higher VO2 max indicates greater cardiovascular capacity and endurance performance potential.
What is a good VO2 max score?
For men aged 20 to 29, a VO2 max above 55 mL/kg/min is considered excellent; 45 to 55 is good. For women aged 20 to 29, above 49 is excellent; 38 to 49 is good. Elite marathon runners typically have VO2 max values above 70 for men and above 60 for women. Values vary significantly by age and fitness level.
How do I conduct the Cooper test?
Use a measured track (400 meters per lap) or accurately measured path. Warm up for 5 to 10 minutes. Run as far as possible in exactly 12 minutes, maintaining maximum but sustainable effort throughout. Record the total distance in meters. Cool down afterward. Avoid the test if you have cardiovascular concerns without medical clearance.
Can VO2 max be improved through training?
Yes. High-intensity interval training (HIIT), long slow distance (LSD) running, and tempo runs all contribute to VO2 max improvements. Research shows improvements of 5 to 25 percent are achievable in previously untrained individuals over 8 to 12 weeks of structured aerobic training. Genetics set an upper ceiling, but most people have significant room for improvement.
Official sources
- Cooper, K.H. (1968). A means of assessing maximal oxygen intake. JAMA, 203(3), 201-204.
- American College of Sports Medicine (ACSM) fitness norms: acsm.org.
- National Strength and Conditioning Association: nsca.com.
Reviewed by the CalculatorHub team, edited by James Graham, 15 June 2026. See our methodology.