Fitness Calculator

Target Heart Rate Calculator

Your maximum heart rate and training zones, using the Karvonen heart rate reserve method when you provide resting HR.

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How this calculator works

Max HR by Tanaka et al. (2001): 208 − 0.7 × age (more accurate than 220 − age, which is also shown). Zones use the Karvonen method: target = resting HR + %intensity × (max HR − resting HR).

For education only, not medical advice. Talk to a healthcare professional about results that concern you.

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