Heart Rate Zone Calculator

Calculate personalized heart rate zones for training. Works without login; later we can prefill and save results for authenticated users.

Heart Rate Zone Calculator

Calculation Method:

Using Tanaka's Formula:

  1. Maximum HR = 208 - (0.7 × Age)
  2. Target HR = Max HR × Zone%

Add your resting heart rate for more personalized zones.

Heart Rate Zones Calculator (Karvonen + Tanaka) | Track Our Hearts