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Fitness
Karvonen Heart Rate
Training zones from HRmax and HRrest
Runs locally in your browser
Parameters
Results
- Target HR
- 150 bpm
- HRmax
- 190
- HRR
- 132
- Zone 60–70%
- 137–150
How it works
Calculate target heart rate using the Karvonen (heart rate reserve) method.
Who it's for: Endurance athletes setting training intensity by heart rate zones.
Target HR = HRrest + (HRmax − HRrest) × intensity.
HRmax estimated as 220 − age.
Also shows zone range for 60–70% intensity.
How to use
- Enter Age, Resting HR (bpm), and target Intensity (%).
- Read Target HR, HRmax, HRR, and Zone 60–70% range.