VO₂ Max Calculator
Estimate your aerobic capacity from a submaximal field test.
VO2 max and what it predicts
VO2 max measures the maximum oxygen your body can use during intense exercise. It's the single best laboratory predictor of cardiovascular fitness and correlates strongly with all-cause mortality. Elite endurance athletes hit 70–90 ml/kg/min; sedentary adults often sit at 25–35.
The good news: VO2 max is highly trainable. 6–12 months of structured training typically lifts it 10–25%. A mix of high-volume Zone 2 work (aerobic base) plus 1–2 weekly sessions of VO2max intervals (4×4 min at ~90% max HR) is the most time-efficient combo.
Frequently asked questions
What is VO2 max?
The maximum volume of oxygen your body can use during intense exercise, measured in ml of O2 per kg of body weight per minute. It's the single best lab predictor of cardiovascular fitness and correlates strongly with longevity. Elite endurance athletes hit 70–90; sedentary adults often sit at 25–35.
How can I raise my VO2 max?
A blend: large Zone 2 aerobic base (60–80% of training) plus targeted VO2max intervals 1–2x/week (4×4 min at 90% max HR is the classic protocol). Expect 10–25% improvements over 6–12 months of consistent training, with diminishing returns after that.
How does VO2 max relate to longevity?
Studies (especially Mandsager et al., 2018) show higher VO2 max correlates with lower all-cause mortality — elite-level aerobic fitness (top 2.5%) cuts mortality risk ~80% vs. bottom 25%. Each MET increase (~3.5 ml/kg/min) is associated with roughly 10–20% lower mortality risk.
Can I estimate VO2 max without a lab test?
Field tests approximate it well: Cooper 12-minute run, 1.5-mile run time, 3-minute step test. Fitness watches (Garmin, Apple) estimate from GPS/HR data with ±5–10% accuracy. Lab gas-exchange tests are gold standard but $150–300.
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