VO2 Max Calculator: Measure Your Aerobic Fitness Level
The Gold Standard of Cardiovascular Fitness
VO2 max measures the maximum volume of oxygen your body can use during intense exercise. It’s expressed in mL/kg/min. Higher VO2 max = better endurance, faster recovery, and lower mortality risk.
VO2 Max Benchmarks by Age & Gender
| Rating | Men 20–29 | Men 30–39 | Women 20–29 | Women 30–39 |
|---|---|---|---|---|
| Superior | > 55 | > 52 | > 49 | > 45 |
| Excellent | 49–55 | 45–52 | 44–49 | 40–45 |
| Good | 43–48 | 40–44 | 39–43 | 35–39 |
| Fair | 37–42 | 35–39 | 33–38 | 30–34 |
| Poor | < 37 | < 35 | < 33 | < 30 |
How to Estimate Without a Lab
- Cooper Test: Run as far as possible in 12 minutes. VO2 max = (distance in metres – 504.9) / 44.73
- 1-Mile Walk Test: Walk 1 mile briskly, record time and heart rate. Formula adjusts for age and weight
- Resting HR method: VO2 max ≈ 15.3 × (max HR / resting HR). Quick estimate, less accurate
Training to Improve VO2 Max
Interval training (HIIT) is the most effective method. Example: 4×4 min intervals at 90–95% max HR with 3 min recovery. Expect 5–15% improvement in 6–8 weeks.
Estimate your VO2 max with the VO2 max calculator. Also check your running pace for training zones.