Heart rate zones (Karvonen method)

Calculate the five training heart-rate zones using the Karvonen reserve method, which adjusts for resting heart rate.

Max heart rate (bpm)

Show the work

  • Heart rate reserve (HRR)126
  • Z1 lower bound (50% HRR)121
  • Z2 lower bound (60% HRR)133
  • Z3 lower bound (70% HRR)146
  • Z4 lower bound (80% HRR)158
  • Z5 lower bound (90% HRR)171

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