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Karvonen Formula Calculator
Calculate target heart rate training zones using Heart Rate Reserve (HRR)
Fitness Guidelines: The Karvonen formula calculates target heart rate by accounting for both your maximum heart rate and resting heart rate (Heart Rate Reserve). Formula: $\text{THR} = [(\text{Max HR} - \text{Resting HR}) \times \text{Intensity}] + \text{Resting HR}$. Enter your details below.
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⚠️ Not medical advice. For fitness, sports science, and wellness reference only. High-intensity cardiovascular training or exercise programs should be undertaken safely, especially if you have existing health conditions.