Heart Rate Zones and Max Heart Rate
Heart rate zones show how hard you worked during an activity. FitKeep breaks every activity down by zone so you can see how much time you spent at each intensity.
Set your max heart rate
Zones are calculated from your maximum heart rate, so setting it makes your zones accurate:
- Open Settings → Profile
- Enter your known max heart rate in bpm, or leave it empty
- If you leave it empty, FitKeep estimates it from your birth date using the formula 207 − (0.7 × age)
- Save your profile
Not sure what your max heart rate is? The estimate from your age is a reasonable starting point. If you’ve seen a higher number in a hard effort or a lab test, enter that instead for a better fit.
The five zones
FitKeep uses the industry-standard 5-zone model, calculated as a percentage of your max heart rate:
- Zone 1 — Very Light (50–60%): recovery and warm-up
- Zone 2 — Light (60–70%): easy aerobic base building
- Zone 3 — Moderate (70–80%): steady tempo effort
- Zone 4 — Hard (80–90%): threshold and harder intervals
- Zone 5 — Maximum (90%+): all-out efforts, uncapped at the top
Where to view your zones
Open any activity’s detail page to see its heart rate zone breakdown, including the time and percentage you spent in each zone. Updating your max heart rate updates the zones across all of your activities.