Fitness Age Calculator
Estimate your cardiorespiratory 'fitness age' from age and resting heart rate.
Free - Free online calculator; no signup required.
About Fitness Age Calculator
Free web tool that estimates your cardiorespiratory "fitness age" by comparing your age and resting heart rate against the FRIEND registry benchmarks. Enter your chronological age and resting heart rate to get an instant, evidence‑based fitness-age estimate and see how your cardiorespiratory fitness compares to population norms. Useful for individuals, trainers, and clinicians seeking a quick, interpretable fitness benchmark.
Key Features
- Estimates 'fitness age' from age and resting heart rate
- Benchmarks results against the FRIEND registry population norms
- Instant, web-based and free to use with no signup
- Provides an interpretable comparison to peers
Who is this for?
Adults, fitness enthusiasts, trainers and health professionals wanting a quick cardiorespiratory fitness benchmark
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