Fitness Age Calculator
Rough estimate of fitness age from resting heart rate and BMI.
years
bpm
Formula: Heuristic estimate based on resting heart rate and BMI deviation
Worth Knowing
Fitness age reframes cardiovascular health as an age rather than a lab value, which makes it intuitive — a 45-year-old with excellent conditioning can have the fitness age of someone in their thirties, and the reverse is also true. This rough estimate leans on resting heart rate and BMI as stand-ins for the VO₂ max that formal versions measure. Because it's a simplified proxy, use it to gauge trends as you train rather than as a precise biological-age readout.
How to Use
- Enter Gender into the first field of the Fitness Age Calculator.
- Fill in the rest: Age, Resting heart rate, Weight, Height.
- Your result appears instantly as you type — there's no submit button or page reload.
Formula
Heuristic estimate based on resting heart rate and BMI deviation