How to Calculate VO2 Max
VO2 max is the maximum amount of oxygen your body can utilize during intense exercise, expressed in milliliters of oxygen per kilogram of body weight per minute (mL/kg/min). It's the gold standard for measuring cardiovascular fitness and aerobic capacity.
Methods for Estimating VO2 Max
1. The Cooper 12-Minute Run Test
Run as far as possible in exactly 12 minutes on a flat track:
VO2 Max = (Distance in meters − 504.9) / 44.73
Example: You cover 2,400 meters in 12 minutes. VO2 Max = (2,400 − 504.9) / 44.73 = 1,895.1 / 44.73 = 42.4 mL/kg/min
2. The Rockport Walk Test
Walk 1 mile as fast as possible, record time and immediately take your heart rate:
VO2 Max = 132.853 − (0.0769 × Weight in lbs) − (0.3877 × Age) + (6.315 × Sex) − (3.2649 × Time in minutes) − (0.1565 × Heart rate)
Where Sex = 1 for male, 0 for female.
3. Resting Heart Rate Method (Quick Estimate)
VO2 Max ≈ 15 × (Max HR / Resting HR)
Using age-predicted max HR (220 − age):
For a 30-year-old with resting HR of 55: VO2 Max ≈ 15 × (190 / 55) = 15 × 3.45 = 51.8 mL/kg/min
VO2 Max Fitness Categories
| VO2 Max (mL/kg/min) | Men Rating | Women Rating |
|---|---|---|
| < 35 | Poor | < 27 Poor |
| 35–40 | Fair | 27–31 Fair |
| 41–45 | Good | 32–36 Good |
| 46–52 | Excellent | 37–41 Excellent |
| > 52 | Superior | > 41 Superior |
How to Improve VO2 Max
High-intensity interval training (HIIT) is the most effective way to increase VO2 max. Intervals at 90–95% of max HR for 4–8 minutes, repeated 4–6 times, produce the greatest improvements.
Use our VO2 max calculator to estimate your score from any fitness test.