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Health & Fitness

Target Heart Rate Calculator

Calculate moderate and vigorous exercise heart-rate zones from age and resting heart rate using the Karvonen formula.

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Moderate Zone (50–70%)
128–153 bpm
  • Maximum Heart Rate190 bpm
  • Vigorous Zone (70–85%)153–171 bpm
Show your work

Karvonen: Target HR = ((220 − age − resting HR) × intensity) + resting HR

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