Zone Calculator

Training by a zone will help you focus more on your workout then on your heart rate or power values.   Many workout devices allow you to set your zones, and display that with or without your heart rate/wattage values.  For me, it’s easier to see what zone I’m in instead of the heart rate/wattage number.   Without the zone, you’ll have to calculate this while you are doing your workout.

The workouts in my training plans reference zones instead of Heart Rate or Wattage numbers.   After you have done your Lactate Threshold Heart Rate or FTP Test (Field Test), you can use this Zone Calculator get your training zones.

30 min avg heart rate from field test:
20 min avg watts from field test:

LTHR:
FTP:
HR Zone /Power LevelWattsHeart RateRPEDescription
11-2Recovery
23-4Endurance
35-6Tempo
47Lactate Threshold
5a/58Above Threshold
5b/69Aerobic Capacity
5c/710Anaerobic Capacity
LTHR Zones Used with permission by Joe Friel, author Mountain Bike Training Bible.
Power Zones by Andy Coggan, PhD.

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