Heart Rate Calculators
Personalize training zones, target heart rate, and aerobic-fitness estimates. Every tool is free, private, responsive, and designed to explain its result clearly.
3 specialized toolsHeart Rate Zone Calculator
Calculate personalized training zones with heart-rate reserve.
Open calculator 02Heart RateTarget Heart Rate Calculator
Find a target exercise heart rate at your chosen intensity.
Open calculator 03Heart RateVO₂ Max Calculator
Estimate aerobic capacity from a 12-minute Cooper field test.
Open calculatorPrivate calculations, clearer decisions
All calculations run in your browser. We do not require an account or store your measurements. Results are educational estimates and should be interpreted within your health and training context.
Learn about our methodology →