Heart-rate Zonas

%HRmax + Karvonen + MAF heart-rate training zones

About this tool

Heart-rate training zones.

Methods

  • %HRmax with HRmax = 220 − age (or Tanaka 208 − 0.7·age).
  • Karvonen = HRrest + frac · (HRmax − HRrest); uses your resting heart rate.
  • MAF (Maffetone) = 180 − age (with adjustments).