VO2 Max Calculator
Estimate your VO2 max fitness level from a simple step test or running time.
VO2 max estimates are informational and do not replace clinical testing or medical advice.
VO2 max calculator
Choose the method that matches your available data.
Field-test estimates are approximate.
Estimated VO2 max
43.9
mL/kg/min based on the selected method.
Broad fitness category
Good
Method used
Rockport walk test
Result type
Field-test estimate
Uses standard VO2 max estimation formulas. Reviewed for arithmetic accuracy. Estimate only. Does not replace clinical testing, medical advice, or professional coaching.
Personalized interpretation
Your estimated VO2 max is 43.9 mL/kg/min using the rockport walk test.
This may fall within the good cardio fitness range as a broad reference.
VO2 max is one measure of aerobic fitness, but endurance performance also depends on efficiency, pacing, training, recovery, and health.
Field-test estimates can vary from lab-measured VO2 max.
If high-intensity exercise causes chest pain, fainting, severe shortness of breath, or unusual dizziness, stop and seek medical guidance.
VO2 max category guide
Low
<30
Broad reference only.
Fair
30–37
Broad reference only.
Good
38–45
Broad reference only.
Very good
46–53
Broad reference only.
Excellent
54+
Broad reference only.
Age, sex/profile, testing method, training history, altitude, and health status affect results.
What VO2 max means
VO2 max estimate methods
Rockport walk test
Uses age, sex/profile, weight, 1-mile walk time, and finish heart rate.
1.5-mile run estimate
Uses a fixed-distance run time to estimate aerobic capacity.
Heart-rate ratio
Uses maximum heart rate and resting heart rate.
VO2 max vs pace, heart rate, and endurance
Two people with the same VO2 max can perform differently.
How to improve VO2 max safely
Training response varies. Consider professional guidance if you are unsure how to progress safely.
Accuracy limits and safety notes
Stop exercising and seek medical attention if you experience chest pain, fainting, severe shortness of breath, unusual dizziness, or concerning symptoms.
Formula explanation
Heart-rate ratio method: VO2 Max ≈ 15.3 × (Max Heart Rate ÷ Resting Heart Rate)1.5-mile run estimate: VO2 Max ≈ (3400 ÷ Run Time in Minutes) + 3.5Rockport: VO2 Max = 132.853 − 0.0769W − 0.3877A + 6.315G − 3.2649T − 0.1565HRW = weight in pounds, A = age, G = sex factor used by the formula, T = walk time in minutes, and HR = heart rate at finish. These formulas are estimates and unit assumptions must match the formula.
Example 1
Max heart rate 190 and resting heart rate 60 gives 15.3 × (190 ÷ 60) ≈ 48.5 mL/kg/min.
Example 2
A 1.5-mile run time of 10 minutes gives (3400 ÷ 10) + 3.5 ≈ 343.5 using this implemented estimate.
Frequently Asked Questions
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