VO2 Max Calculator
Estimate your VO2 max fitness level using multiple test methods.
| Age Group | Poor | Fair | Good | Excellent | Superior |
|---|---|---|---|---|---|
| Under 30 | <31 | 31–37 | 38–47 | 48–54 | 55+ |
| 30–39 | <30 | 30–36 | 37–45 | 46–51 | 52+ |
| 40–49 | <28 | 28–34 | 35–43 | 44–49 | 50+ |
| 50–59 | <26 | 26–32 | 33–40 | 41–46 | 47+ |
| 60+ | <24 | 24–29 | 30–37 | 38–43 | 44+ |
Frequently Asked Questions
What is VO2 max and what does it measure?
VO2 max (maximal oxygen uptake) is the maximum rate at which your body can consume and use oxygen during intense exercise, expressed in mL of O₂ per kg of bodyweight per minute (mL/kg/min). It is the gold standard measure of cardiovascular fitness and aerobic capacity. Elite male endurance athletes often exceed 70–85 mL/kg/min; the average sedentary adult male is 35–40 mL/kg/min.
What is a good VO2 max by age and sex?
Approximate "Good" category (American College of Sports Medicine): Men 30–39: 44–50 mL/kg/min; Men 40–49: 41–46. Women 30–39: 38–43; Women 40–49: 36–41. VO2 max naturally declines approximately 1% per year after age 25–30, though training can maintain it well into later life.
How do I do the Cooper 12-minute run test?
Run (or walk/run) as far as possible in exactly 12 minutes on a flat measured course. Record the total distance in metres. The Cooper formula: VO2 max = (distance in metres − 504.9) ÷ 44.73. Example: running 2800m gives (2800 − 504.9) ÷ 44.73 ≈ 51.3 mL/kg/min. Warm up first and don't start too fast.
Can I improve my VO2 max, and by how much?
Yes — VO2 max is highly trainable. A sedentary person starting regular aerobic training can improve 15–25% in 8–12 weeks. High-intensity interval training (HIIT) produces the fastest gains. Even moderate Zone 2 aerobic training improves VO2 max over time. After 6–12 months of consistent training, improvements slow as you approach your genetic ceiling.
Which VO2 max estimation method is most accurate?
Gold standard: metabolic cart in a lab (VO2 max treadmill test with expired gas analysis). Best field tests: Cooper 12-minute run (r = 0.90 with lab VO2 max) and the 1.5-mile run (r = 0.88). The Rockport Walk Test is good for beginners. Resting heart rate methods (like Uth-Sørensen) are convenient but less precise, with errors of ±10–15%.