Enter your test method, age, weight, and performance data to estimate your VO2 max — your maximal aerobic capacity in mL/kg/min. The VO2 Max Calculator supports five methods: Resting Heart Rate, 1-Mile Walk Test, 3-Minute Step Test, 1.5-Mile Run Test, and 2000m Rowing. Select your method, fill in your details, and get your VO2 max score along with a fitness category rating.
VO2 Max
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Fitness Category
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Approximate Percentile
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Estimated Max Heart Rate
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VO2 max, or maximal aerobic capacity, is the maximum rate at which your body can consume oxygen during intense exercise. It is expressed in millilitres of oxygen per kilogram of body weight per minute (mL/kg/min). A higher VO2 max indicates better cardiovascular fitness and endurance potential.
The resting heart rate method uses the Uth-Sørensen-Overgaard-Pedersen formula: VO2 max = 15 × (Max HR / Resting HR). Max heart rate is estimated as 220 minus your age. This approach is convenient because it requires no physical test — just your resting pulse measured after waking up.
With a resting heart rate of 60 bpm and an estimated max heart rate of 190 bpm (220 − 30), your VO2 max would be approximately 15 × (190 / 60) ≈ 47.5 mL/kg/min. This typically falls in the 'Good' to 'Excellent' range for most adults.
Laboratory testing (VO2 max treadmill or cycle ergometer) is the gold standard, but field tests like the 1.5-mile run or 1-mile walk test are well-validated and practical. The resting heart rate method is the least precise but requires no exercise. The rowing test is particularly accurate for trained athletes who row regularly.
VO2 max reflects the efficiency of your heart, lungs, and muscles working together to deliver and use oxygen. It is a strong predictor of endurance athletic performance and is also associated with long-term health outcomes — higher aerobic capacity is linked to reduced risk of cardiovascular disease and overall mortality.
The most effective methods include high-intensity interval training (HIIT), tempo runs, and consistent aerobic exercise over time. Research shows that 6–8 weeks of structured training can meaningfully improve VO2 max. Beginners see the fastest gains, while advanced athletes must train harder for smaller improvements.
Average values vary by age and sex. For men aged 30–39, a score above 44 mL/kg/min is considered 'Good', while for women in the same age group, above 37 mL/kg/min is 'Good'. Elite endurance athletes often exceed 60–70 mL/kg/min. Values naturally decline with age, roughly 1% per year after 25.
The 3-minute step test involves stepping up and down on a 30.5 cm (12-inch) step at a rate of 24 steps per minute for exactly 3 minutes. Your heart rate is measured immediately afterward. The lower your post-exercise heart rate, the higher your estimated VO2 max, indicating better cardiovascular recovery.