VO2 Max Calculator
Estimates aerobic capacity from your maximum and resting heart rates with the Uth-Sorensen formula and places the result in an age-based fitness band.
Recent
Formula
How the calculation works
The calculator multiplies the maximum heart rate by 15.3 and divides by the resting heart rate.
It then compares the result with the fitness band for your age group to describe your level.
A maximum rate of 190 over a resting rate of 60 gives a VO2 max of 48.45, an excellent level at age 25.
Common mistakes
- Using a guessed maximum heart rate instead of a measured one shifts the whole estimate, so test it properly first.
- Measuring resting heart rate just after coffee or exercise gives a low reading and an inflated VO2 max.
When to use it
- Use it to track aerobic fitness over time without needing a treadmill or a lab test.
- Use the band to set a realistic training goal for your age group before your next event.
Worked example
With a maximum heart rate of 190 beats a minute and a resting rate of 60, the VO2 max is 48.45, which is excellent for someone aged 25.
Common questions
How accurate is the Uth-Sorensen estimate?
It is a field estimate based on the heart rate ratio, so it is useful for tracking trends but less precise than a lab test with gas analysis.
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