longevity · 1 min read
VO2 max chart by age: where you sit and what it means
A VO2 max chart shows normative ranges by age and sex. What matters more is which direction yours is moving, because cardiorespiratory fitness responds to training at any age.
Written by Lifebar Desk · Checked against the sources listed below
Published 08 Aug 2026
Key takeaways
- VO2max declines roughly 10% per decade after the thirties without training.
- Moving from the lowest fitness category to below-average carries the largest mortality benefit.
- Watch estimates track trends reasonably but are unreliable as absolute values.
VO2max is the maximum oxygen your body can use per minute, scaled to bodyweight. It is the best single measure of cardiorespiratory fitness and among the strongest predictors of mortality.
Approximate ranges, ml/kg/min
| Age | Men, low → high | Women, low → high |
|---|---|---|
| 20 to 29 | <38 → >52 | <31 → >44 |
| 30 to 39 | <35 → >49 | <29 → >41 |
| 40 to 49 | <32 → >45 | <27 → >38 |
| 50 to 59 | <29 → >41 | <24 → >35 |
| 60 to 69 | <26 → >37 | <22 → >32 |
Treat these as orientation, not diagnosis, normative tables differ by testing protocol and population.
What the decline looks like
Untrained adults lose roughly 10% per decade after 30, accelerating after 60. Training does not stop the decline but shifts the whole curve upward, which is the practical goal: arriving at 75 with the fitness of an untrained 55-year-old.
How to raise it
- Volume: 2 to 3 hours a week of easy, conversational aerobic work
- Intensity: one weekly session of 4 × 4 minutes near maximum effort, with 3 minutes easy between
- Consistency: the adaptation reverses within weeks of stopping
On wearable estimates
Watches infer VO2max from the relationship between pace and heart rate. Absolute accuracy is mediocre, particularly for people on beta blockers or with hilly routes. Direction of travel over months is the useful signal.
Frequently asked
What is a good VO2max?
It is age and sex relative. A 45-year-old man above roughly 45 ml/kg/min and a woman above roughly 38 sit in the high-fitness range on common normative tables.
How fast can VO2max improve?
Untrained people commonly gain 10 to 20% within 8 to 12 weeks of structured training combining easy volume and intervals.
Sources
Educational content, talk to your clinician before changing treatment.
