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VO2 Max Calculator
Estimates VO₂ max from a 12-minute run, a 1-mile walk test or resting heart rate, with the category for your age and sex.
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In short
VO2 Max Calculator is a free online tool on inputtesthub.com that estimates VO₂ max from a 12-minute run, a 1-mile walk test or resting heart rate, with the category for your age and sex. It needs no account, no download and no payment, and there is no daily usage limit. Everything is processed inside your own browser, so the data you paste is never uploaded to a server.
How to use the VO2 Max Calculator
- Enter your figures in the input fields.
- The result updates as you type, together with the full working.
- Check the breakdown table to see exactly how the number was reached.
About the VO2 Max Calculator
The VO2 Max Calculator estimates VO₂ max from a 12-minute run, a 1-mile walk test or resting heart rate, with the category for your age and sex. It runs as plain JavaScript inside the page, which means there is no upload step, no queue and no size limit imposed by a server — the only limit is your own device.
What people use it for
- Tracking aerobic fitness over months.
- Comparing your result against age and sex norms.
- Getting a baseline without a lab test.
Details
| Average man, 30 | ≈ 44 ml/kg/min |
|---|---|
| Average woman, 30 | ≈ 37 |
| Elite endurance | 70–85 |
| 1 MET | 3.5 ml/kg/min |
The maths behind it
This tool uses Cooper: VO₂ max = (metres in 12 min − 504.9) ÷ 44.73. Resting HR estimate: 15.3 × (HRmax ÷ HRrest). Every intermediate value is shown on screen, so the result can be checked by hand.
Field tests estimate VO₂ max, they do not measure it — expect within 10–15% of a laboratory result. Good for tracking your own progress, not for comparing against someone else’s lab number. Do not attempt a maximal test if you have a heart condition or have been inactive for a long time.
Frequently asked questions
What is a good VO2 max?
For a 30-year-old man, around 44 ml/kg/min is average and above 51 is good; for a woman the same ages are roughly 37 and 43. Elite endurance athletes reach 70–85, which is largely genetic.
How accurate is the Cooper test?
Within about 10–15% of a laboratory measurement if you pace it honestly and run flat out. A first attempt usually underestimates because most people start too fast and fade.
Do I need an account to use the VO2 Max Calculator?
There is no cost and no cap. The VO2 Max Calculator is not a demo of a paid product, so nothing is held back or watermarked.
Is what I paste into the VO2 Max Calculator stored?
No. The VO2 Max Calculator runs entirely in your browser using JavaScript. Nothing is transmitted, logged or stored, which you can verify yourself in the Network tab of your browser's developer tools.
What formula does the VO2 Max Calculator use?
It uses Cooper: VO₂ max = (metres in 12 min − 504.9) ÷ 44.73. Resting HR estimate: 15.3 × (HRmax ÷ HRrest). The full working is printed under the result, so you can follow every step rather than trusting a black box.
What do people use the VO2 Max Calculator for most?
Typical uses: tracking aerobic fitness over months. Comparing your result against age and sex norms. Getting a baseline without a lab test. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
Is there anything to watch out for?
Field tests estimate VO₂ max, they do not measure it — expect within 10–15% of a laboratory result. Good for tracking your own progress, not for comparing against someone else’s lab number. Do not attempt a maximal test if you have a heart condition or have been inactive for a long time.
Which values should I know?
Average man, 30 is ≈ 44 ml/kg/min. Average woman, 30 is ≈ 37. Elite endurance is 70–85. These are printed on the page itself, so you do not have to take them on trust.
Can I rely on this for exact work?
The calculation runs in double precision and the result is shown to ten significant figures, so converting a value and converting it back returns the original. What is displayed is rounded for readability; what is copied is not.
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