What Is a Good VO2 Max by Age? (Men’s Chart)

Health Density Editorial Team · September 18, 2026 · 8 min read

Man jogging outdoors while tracking his run

VO2 max is one of the most valuable health and fitness numbers a man can know. It reflects your cardiovascular fitness and is one of the strongest predictors of longevity there is. Maybe your smartwatch showed a reading and you wondered whether it counts as a good VO2 max. This guide gives you the context. It covers what VO2 max means, what counts as good for men at each age, and how it’s measured. It also explains why the number matters so much.

What VO2 Max Is

VO2 max is the maximum amount of oxygen your body can use during intense exercise. It reflects how well your heart, lungs, and muscles work together to take in, deliver, and use oxygen. In short, it measures your cardiovascular fitness and aerobic capacity. It’s usually expressed in millilitres of oxygen per kilogram of bodyweight per minute (ml/kg/min).

Fitness is one part of protecting your heart. Our guide to heart health for men brings together the numbers, tests and habits that matter most.

A higher VO2 max means a fitter, more capable cardiovascular system, better able to sustain physical effort. And crucially, it’s not just about athletic performance. VO2 max is one of the best predictors of long-term health and lifespan there is (see how to improve VO2 max).

What Counts as a Good VO2 Max by Age

VO2 max naturally declines with age, so “good” is relative to your age group. Values also vary by fitness level. As a rough general guide for men (values are approximate and vary by source), a decent-to-good VO2 max might look something like:

Men in their 20s to 30s: roughly the mid-40s ml/kg/min or higher is good; well-trained individuals reach the 50s or higher, and elite athletes higher still. Below the mid-30s is on the lower side.
Men in their 40s: roughly the low-to-mid 40s or higher is good; the decline with age means slightly lower values than in your 20s to 30s are still solid.
Men in their 50s: roughly the upper 30s to low 40s or higher is good.
Men in their 60s and beyond: the ranges shift lower again with age; maintaining a value in the mid-30s or higher is good for this age group.

These are rough general figures. The key points are simple: higher is better within your age group, and the ranges shift down with age. Most fitness devices and calculators also provide their own age-graded categories (poor, fair, good, excellent) that put your number in context. Don’t fixate on exact thresholds, focus on where you sit for your age and, more importantly, on improving over time.

Why VO2 Max Matters So Much

VO2 max is useful to know and improving for two big reasons:

It strongly predicts longevity. This is the striking one. VO2 max (cardiorespiratory fitness) is one of the strongest predictors of all-cause mortality and longevity there is, arguably a better predictor than many traditional risk factors. Higher cardiovascular fitness is robustly associated with living longer and staying capable (see longevity habits). Improving your VO2 max is one of the highest-leverage things you can do for long-term health.

It reflects your functional capacity. A higher VO2 max means you’re more physically capable, better able to handle exertion, and it supports staying active and independent as you age. It’s a marker of your overall fitness and vitality.

So VO2 max isn’t just a number for athletes. It’s a health metric with strong ties to how long and how well you’ll live.

Man on a treadmill during a clinical exercise test

How VO2 Max Is Measured

A few ways to get your VO2 max:

Fitness wearables (estimates). Many smartwatches and fitness trackers (Garmin, Apple Watch, and others) estimate your VO2 max from your heart rate and pace during activity. These are estimates. They’re useful for tracking trends over time but not perfectly precise (see do sleep trackers work for the general point about wearable accuracy). Good for seeing your rough level and, especially, your progress.
Fitness tests / calculators. Various submaximal fitness tests and calculators estimate VO2 max from your performance on a set task.
Laboratory testing (most accurate). A proper VO2 max test in a lab (with a mask measuring your oxygen use during a maximal exercise test) is the gold standard for accuracy, used by athletes and in research.

For most men, a wearable estimate or fitness test is enough to know roughly where you stand and to track improvement, which is what matters most.

The Most Important Thing: Improving It

Rather than fixating on your exact number, focus on improving your VO2 max over time. It’s highly trainable, so raising it directly benefits your health and longevity. The proven approach combines a base of easy aerobic training (zone 2 cardio, see zone 2 cardio) with some high-intensity intervals (see how to improve VO2 max for the full method). Whatever your current VO2 max, you can raise it with consistent training, and doing so is one of the best investments in your long-term health.

Why This Number Matters More Than Most

Plenty of health metrics are useful to track. VO2 max is worth treating differently, because of what one very large study found when it followed people for years afterwards.

The cohort

Researchers tracked 122,007 consecutive patients who had undergone exercise treadmill testing and looked at long-term all-cause mortality against measured fitness.

Cardiorespiratory fitness was inversely associated with mortality, and, strikingly, there was no observed upper limit of benefit. Fitness kept being associated with lower mortality as far up the scale as the data went.

That is unusual. Most health variables have a point where more stops helping, and often a point where more starts hurting. This one did not show that within the range studied.

The extreme group

Participants whose fitness sat two or more standard deviations above the mean for their age and sex had the lowest risk-adjusted mortality of any group. Notably, the additional benefit of elite over merely high fitness showed up most clearly in people aged 70 and over and in those with high blood pressure.

In other words, the groups you might assume should take it easier were the ones where the extra fitness appeared to count for most.

How to hold this

Two cautions. This is observational, so it shows association rather than proving that raising your VO2 max causes you to live longer. Some of the very fit are very fit partly because they were healthy to begin with.

And a treadmill test in a clinical setting is a more reliable measurement than the estimate your watch produces from heart rate and pace. Treat the watch number as a trend line for yourself, not as a figure to compare against a table or against your friend’s watch.

With those caveats, the practical message survives intact. Of the numbers you can move, this is among the most strongly tied to how long you last, and the evidence gives no particular reason to stop improving it once you reach average.

Frequently Asked Questions

What is a good VO2 max for my age?

It varies by age (VO2 max declines with age) and source, but roughly: mid-40s ml/kg/min or higher is good for men in their 20s to 30s, with age-appropriate ranges shifting lower each decade. Most fitness devices provide age-graded categories (good, excellent, etc.) that put your number in context.

What does VO2 max measure?

VO2 max measures the maximum amount of oxygen your body can use during intense exercise, reflecting how well your heart, lungs, and muscles take in, deliver, and use oxygen. It’s a measure of your cardiovascular fitness and aerobic capacity, expressed in ml/kg/min.

Why is VO2 max important?

It’s one of the strongest predictors of longevity and all-cause mortality there is. Men with higher cardiovascular fitness tend to live longer and stay capable for longer. It also reflects your functional capacity and vitality. Improving it is one of the highest-leverage things you can do for long-term health.

How do I measure my VO2 max?

Fitness wearables (smartwatches, trackers) estimate it from heart rate and pace, reasonably useful for tracking trends but not perfectly precise. Fitness tests and calculators estimate it from performance, and laboratory testing (with a mask during maximal exercise) is the most accurate. A wearable estimate is enough for most men.

Does VO2 max decline with age?

Yes, VO2 max naturally declines with age, which is why “good” ranges are age-specific. However, training can substantially offset this decline. You can improve your VO2 max at any age, and maintaining a higher value than typical for your age is one of the best things for longevity.

The Bottom Line

VO2 max is one of the most valuable numbers a man can know. It measures your cardiovascular fitness (the maximum oxygen your body can use during intense exercise) and is one of the strongest predictors of longevity there is. What counts as “good” is relative to your age, since VO2 max naturally declines over time. Roughly the mid-40s ml/kg/min or higher is good for men in their 20s to 30s, and the ranges shift lower each decade. Most fitness devices provide age-graded categories to put your number in context.

You can measure it via fitness wearables (useful estimates for tracking trends), fitness tests, or lab testing (most accurate). But rather than fixating on your exact number, focus on improving it over time. VO2 max is highly trainable. Build it with a base of easy aerobic work plus some high-intensity intervals, and few habits will do more for your long-term health.

This article is for informational purposes only and does not constitute medical advice. Consult a qualified healthcare professional before starting intense exercise, especially if you have a heart condition or have been inactive.

Sources

Health Density Editorial Team