Heart Rate Zone Calculator
Calculate exercise heart-rate zones using age, maximum heart rate, resting heart rate, and heart rate reserve.
Last updated: August 2026
Training zones
| Zone | Intensity | Heart-rate range | Label |
|---|
Method comparison
Estimated maximum heart rate is an average approximation and may differ substantially between individuals. Zone boundaries are broad planning ranges, not precise physiological thresholds. Wearables may report heart rate with delay or error. Medications and health conditions can alter heart-rate response. Stop exercising and seek appropriate medical help for concerning symptoms such as chest pain, faintness, or unusual shortness of breath.
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