Nishaana
VO2 max calculator — your aerobic ceiling.
VO2 max is the most oxygen your body can use per minute during hard exercise, the top marker of aerobic fitness. This calculator estimates it two ways — the Cooper 12-minute run test, (distance − 504.9) ÷ 44.73, and a resting-heart-rate method — then rates your result by age and sex. Pick a method below — results update instantly, no signup.
Max HR is estimated with Tanaka (208 − 0.7 × age).
VO2 max fitness categories
Where your number lands, by age and sex, in ml/kg/min. Your row and category highlight once you calculate. Bands from the Cooper Institute norm charts.
| Age | Very poor | Poor | Fair | Good | Excellent |
|---|---|---|---|---|---|
| 20–29 | <33 | 33–36 | 37–41 | 42–51 | 52+ |
| 30–39 | <31 | 31–35 | 36–40 | 41–48 | 49+ |
| 40–49 | <30 | 30–33 | 34–38 | 39–44 | 45+ |
| 50–59 | <26 | 26–30 | 31–35 | 36–42 | 43+ |
| 60+ | <20 | 20–25 | 26–31 | 32–37 | 38+ |
| Age | Very poor | Poor | Fair | Good | Excellent |
|---|---|---|---|---|---|
| 20–29 | <28 | 28–32 | 33–36 | 37–46 | 47+ |
| 30–39 | <27 | 27–30 | 31–34 | 35–44 | 45+ |
| 40–49 | <25 | 25–28 | 29–32 | 33–41 | 42+ |
| 50–59 | <21 | 21–24 | 25–28 | 29–37 | 38+ |
| 60+ | <19 | 19–22 | 23–26 | 27–34 | 35+ |
The formulas, explained.
No black box. Two validated field methods — a maximal 12-minute run and a resting-heart-rate estimate — written out in full.
VO2max = (metres − 504.9) ÷ 44.73 Run as far as you can in 12 minutes. Kenneth Cooper, 1968. 2,600 m → 46.8 ml/kg/min.
VO2max = 15.3 × (HRmax ÷ HRrest) Uth et al., 2004. Max HR from Tanaka. 187 / 60 → 47.7 ml/kg/min.
band by age × sex Your ml/kg/min is placed into Very poor → Excellent using the Cooper Institute norm tables.
Worked example — a 30-year-old runs 2,600 m in 12 minutes. VO2max = (2600 − 504.9) ÷ 44.73 = 46.8 ml/kg/min, which lands in the good band for men aged 30–39. Field estimates carry a ±10–15% spread and depend on pacing; a graded lab test is the gold standard.
Related cardio calculators.
Take your aerobic number the rest of the way — into zones, pace, and the tracker that logs it.
Heart rate zone calculator
Build all 5 training zones from your max heart rate.
Open toolRunning pace calculator
Turn a time and distance into pace, splits, and race times.
Open toolCalories burned calculator
MET-based calorie burn for cardio and lifting.
Open toolAll cardio calculators
Every endurance and conditioning tool in one place.
Open toolVO2 max questions.
What is VO2 max?
VO2 max is the maximum volume of oxygen your body can use per minute during hard exercise, measured in millilitres per kilogram of bodyweight per minute (ml/kg/min). It is the single best lab marker of aerobic fitness: a higher VO2 max means your heart, lungs, and muscles deliver and burn more oxygen, so you can sustain a faster pace for longer.
How do you calculate VO2 max from the Cooper test?
The Cooper test asks you to cover as much distance as possible in 12 minutes, then applies the formula VO2max = (distance in metres − 504.9) ÷ 44.73. For example, running 2,600 metres gives (2600 − 504.9) ÷ 44.73 ≈ 46.8 ml/kg/min. Kenneth Cooper published this field test in 1968 as a practical stand-in for lab testing.
Can I estimate VO2 max from resting heart rate?
Yes. The Uth-Sørensen-Overgaard-Pedersen formula estimates VO2max as 15.3 times your maximum heart rate divided by your resting heart rate. It is less precise than a run test because it relies on estimated max HR, but it needs no exercise, making it a fast, low-effort screen — a fitter heart with a lower resting rate produces a higher estimate.
What is a good VO2 max for my age?
A good VO2 max depends on age and sex. For men aged 20 to 29, roughly 42 to 51 ml/kg/min rates as good and 52 or above as excellent; for women the same age, about 37 to 46 is good and 47 or above is excellent. Values decline by roughly 5 to 10 percent per decade after 30, so the category tables on this page adjust the bands by age.
How can I improve my VO2 max?
The most effective way to raise VO2 max is a mix of high-intensity intervals near your max heart rate and a large base of easy aerobic (Zone 2) volume. Intervals push the top-end ceiling while easy miles build the aerobic engine that supports it. Most trained athletes see measurable gains within 6 to 12 weeks of consistent, progressive training.
How accurate is an estimated VO2 max?
Field estimates from a run test or resting heart rate typically land within about 10 to 15 percent of a lab-measured value. The Cooper test depends on pacing and effort, and the heart-rate method depends on an estimated max HR, so treat the number as a fitness benchmark to track over time rather than a clinical measurement.
Save your VO2 max. Watch it climb.
Free in your browser — Nishaana logs your retests and cardio so your aerobic progress is a chart, not a guess. No download.
Start free