Karvonen Formula

Calculate target heart rate using Karvonen formula. Determine optimal heart rate zones for cardiovascular training.

Heart Rate Information

50-60%: Light, 60-70%: Moderate, 70-85%: Vigorous, 85-95%: Maximum

Results

Enter heart rate information to calculate target zone

About Karvonen Formula

  • • THR = [(HRmax - HRrest) × %] + HRrest
  • • HRmax = 220 - Age
  • • More accurate than simple % of max
  • • Accounts for resting heart rate