Cooper 12-min Run Test
Estimate VO₂max with the Cooper running test
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Formula: VO₂max = (distance_m - 504.9) / 44.73 (Cooper KH, JAMA 1968). Run at a steady pace for the full 12 minutes.
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Enter your distance, age, and gender to estimate your VO₂max
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References
- Cooper KH. A means of assessing maximal oxygen intake. JAMA. 1968 Jan 15;203(3):201-4.
- American College of Sports Medicine (ACSM) - Guidelines for Exercise Testing and Prescription
- Cooper Institute - Fitness norms and standards for all ages
About Cooper 12-min Run Test
How It Works
The Cooper 12-minute run test estimates VO₂max (maximal oxygen uptake) by measuring how far you can run in 12 minutes. The formula VO₂max = (distance_meters - 504.9) / 44.73 converts your running distance into a standardized cardiovascular fitness metric.
How to Interpret Results
Your VO₂max is compared to age and gender-specific norms from the Cooper Institute. Ratings range from Excellent to Poor. A higher VO₂max indicates better cardiovascular fitness and is associated with lower risk of chronic disease and mortality.
Training Tips
To improve your Cooper test score, incorporate interval training, tempo runs, and consistent aerobic exercise. Aim for at least 150 minutes of moderate-intensity or 75 minutes of vigorous-intensity cardio per week.
Limitations
The Cooper test is an estimate — actual VO₂max measured in a lab may differ. Factors like pacing strategy, running economy, motivation, and environmental conditions affect performance. Use this as a fitness screening tool, not a diagnostic test.
Last reviewed: July 25, 2026
Medical Disclaimer: This calculator is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your physician or qualified health provider with any questions regarding your health.