VO₂ Max: what is a good level?

Written by Steve Fayzulayev. Clinically reviewed by Naomi Fayzulayev, FNP-C, MSN.

Last reviewed 2026-11-09. See our editorial policy and methodology.

VO₂ max is not routinely measured for everyone. Fitness categories can differ by age, sex, population and testing method; they are not individual predictions of mortality.

Longevity-optimised target 45–60 mL/kg/min

This is the range used by the structural dial in the Longevity Score calculator. It is deliberately tighter than the range printed on a standard lab report — the reasoning is below.

What your lab flags vs what the evidence supportsmL/kg/min
Standard
none exists
Optimised
45–60 mL/kg/min
1537.560

Nothing you type here is sent anywhere, stored, or logged. It never leaves this page.

VO₂ Max has no standard reference range, because it is almost never measured in routine care — so there is no "normal" to be reassured by. The target comes from outcome data rather than from a reference population.

What VO₂ Max actually measures

VO₂ max is the maximum rate at which your body can take in oxygen, transport it and use it. It reflects how heart, lungs, circulation and muscles work together during exercise.

It is often expressed in millilitres of oxygen per kilogram of body weight per minute. A change in body weight can change this relative value even if absolute oxygen uptake is unchanged.

Why it matters

In observational cohorts, higher cardiorespiratory fitness has been associated with lower all-cause mortality. That association does not predict an individual's outcome.

Fitness is one factor relevant to function later in life. As exercise capacity falls, everyday tasks may consume a larger share of available capacity; independence also depends on many other factors.

Why it's on the dashboard

The structural dial includes fitness as one aspect of physical capacity. In an observational study of 246 patients, Brawner et al. (Mayo Clinic Proceedings, 2021) found that higher exercise capacity before COVID-19 was associated with lower odds of hospitalisation after adjustment for other factors. This did not show that increasing fitness caused the difference, or predict an individual's survival or independence. See the Structural dial for the broader context.

Why this range is stricter than your lab's

Fitness categories may describe a person's standing relative to an age- and sex-specific population; methods and populations differ.

The calculator's scoring bands are model choices, not established clinical targets or a prediction of individual outcomes.

This distinction applies across the whole panel, not just this marker — see optimal versus standard lab ranges for the general case.

For where a specific value sits against the population, see VO₂ max percentiles by age and sex.

What moves VO₂ Max

Aerobic activity
Regular activity appropriate to your health can improve exercise capacity.
Training intensity
Higher-intensity exercise may improve fitness, but is not appropriate for everyone.
Body weight
A change in body weight can alter the per-kilogram value without a change in absolute oxygen uptake.

Educational information, not a treatment plan. Discuss changes to medication or supplementation with a clinician who knows your history.

How fast it responds

Fitness can change over weeks to months, but the amount and timing vary with the person, training and measurement method. See response times across all markers for how this compares.

What can distort the result

Score VO₂ Max against all 8 dials

Frequently asked questions

What is a good VO₂ Max level?

The longevity-optimised target used in this calculator is 45–60 mL/kg/min. VO₂ max is not routinely measured for everyone. Fitness categories can differ by age, sex, population and testing method; they are not individual predictions of mortality.

Why is this target stricter than the range on my lab report?

Fitness categories may describe a person's standing relative to an age- and sex-specific population; methods and populations differ.

How fast does VO₂ Max respond to change?

Fitness can change over weeks to months, but the amount and timing vary with the person, training and measurement method.

VO₂ Max feeds the structural dial, and read it alongside Grip Strength · HRV · Daily Steps.

Ready to act on it? How to raise VO₂ Max ranks the interventions by leverage and says what does not work.

All biomarkers

Sources and further reading

These sources provide general context; calculator scoring ranges are not clinical treatment targets.

Not medical advice. These are longevity-optimised reference ranges, which are deliberately stricter than standard clinical "normal" values. A value outside them does not mean you have a disease. Speak to a qualified healthcare professional before changing medication, supplements or training. Full disclaimer.
Ask Us

Choose a question. Answers come from this site, and nothing you open is sent anywhere.

What is a good VO₂ Max level?

The longevity-optimised target used in this calculator is 45–60 mL/kg/min. VO₂ max is not routinely measured for everyone. Fitness categories can differ by age, sex, population and testing method; they are not individual predictions of mortality.

Why is this target stricter than the range on my lab report?

Fitness categories may describe a person's standing relative to an age- and sex-specific population; methods and populations differ.

How fast does VO₂ Max respond to change?

Fitness can change over weeks to months, but the amount and timing vary with the person, training and measurement method.

What is biological age?

Chronological age counts birthdays. Biological age estimates how old your body appears to be functioning, based on measurable biomarkers. Two people born the same year can differ by a decade or more in vascular stiffness, insulin signalling or cardiorespiratory fitness. Biological age makes that gap explicit — and unlike your birthday, it can move in either direction.

How is the Longevity Score calculated?

Each biomarker you enter is scored against longevity-optimised reference ranges and grouped into one of eight dials. Every dial produces its own biological age, and those are combined using fixed weights into a single composite, then expressed as a Longevity Score from 0 to 100. The weighting reflects how strongly each system predicts healthspan: structural and vascular carry the most, hormonal the least.

Do I need all 53 biomarkers?

No. The short form contains a subset of scoring inputs plus context-only fields, and you can leave any of them blank. It is not a recommendation to obtain tests. Missing values are excluded from the calculation — never treated as zero or as 'normal'. A dial with no scored data is dropped entirely and the remaining weights renormalise.

What can I measure without a blood test?

Some inputs can be measured without bloodwork. Blood pressure needs a home cuff and waist-to-height needs a tape measure. Wearable estimates vary; the floor-based sitting-rising test carries a fall risk and should only be attempted if safe.

Is this an anti-aging calculator? Is it a healthspan calculator?

Both terms describe what this tool does, and which one fits depends on what you are asking. "Anti-aging" is the term most people search, and loosely means anything aimed at slowing or reversing age-related decline — this tool fits that description if you score your dials and act on what you find. "Healthspan calculator" is the more precise term: healthspan is the number of years lived without serious chronic disease or disability, and that cannot be measured directly, so this tool scores eight systems that each function as an early-warning proxy for it. Either way, the method is the same: real biomarkers, published thresholds, no vanity-metric framing.

Why don't you have a quick quiz that skips biomarkers entirely?

Several popular tools ask only about habits — exercise days, sleep hours, smoking, diet quality — and return a single precise-looking age. We looked at the research behind that approach and chose not to build it. Published studies do show real, individually-measured links between specific habits and epigenetic age acceleration, but those effect sizes come from different study populations, different DNA-methylation clocks and different measurement units. Adding them together into one number is not something the underlying research actually supports — it produces a precise-looking result built on an imprecise method. Our dials use direct physiological measurements instead: a real blood pressure reading, a real VO₂ max, a real ApoB value. Several dials score from home-measurable data alone with no quiz-guessing involved — see what you can measure without a blood test, above.

Why are your 'optimal' ranges stricter than my lab's normal range?

Standard reference ranges describe what is common in a general population, which now includes a great deal of metabolic dysfunction. They are tuned to flag disease, not to identify what is optimal for a long healthspan. A fasting insulin of 20 µIU/mL sits inside most labs' normal range and is strongly associated with insulin resistance. This tool uses longevity-optimised thresholds instead, so a flag here means room for optimisation — not a diagnosis.

All questions