Estimate VO2 max
Estimate VO2 max, a marker of aerobic fitness, from your resting and maximum heart rate using the non-exercise Uth-Sorensen formula.
Estimated max heart rate: 190 bpm (220 - age)
Uses the Uth-Sorensen non-exercise estimate, which needs only resting and (estimated) max heart rate. Category thresholds are general population figures, not adjusted for your specific age or sex.
Used to estimate your max heart rate as 220 minus age, the standard rough estimate.
Measured first thing in the morning, before getting out of bed, for the most accurate reading.
Calculated using the Uth-Sorensen non-exercise formula, plus a general fitness category.
Frequently asked
What is VO2 max?
A measure of the maximum amount of oxygen your body can use during intense exercise, commonly used as a marker of aerobic (cardiovascular) fitness.
How is this estimated without a fitness test?
Using the Uth-Sorensen formula (VO2max = 15.3 x max HR / resting HR), a non-exercise estimate that needs only your resting and estimated max heart rate, not an actual treadmill or lab test.
How accurate are the fitness categories?
They use general population thresholds and aren't adjusted for your specific age or sex, so treat them as a rough guide rather than a precise ranking.
Is this medical advice?
No. This is a general estimate for informational purposes only, not medical advice. Talk to a healthcare provider or certified trainer before changing your training or diet.