Heart Rate Training Zones Calculator, House and Johnston Method

Enter your maximum heart rate (HR max) and click the calculate button to show your target HR zones.



    Intensity Zone HR
    Zone 0 - Recovery
    Zone 1 - Basic Endurance
    Zone 2 - No Man's Land
    Zone 3 - Uppermost Aerobic
    Zone 4 - Anaerobic
    Zone 5 - Maximum Effort