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Karvonen Target Heart Rate
Calculate personalised heart rate training zones using the Karvonen formula.
Measure first thing in the morning
Lower bound of your target zone
Upper bound of your target zone
Results
Max Heart Rate190
Target HR Low (BPM)146
Target HR High (BPM)171
Heart Rate Reserve125
What is it?
The Karvonen formula calculates a personalised target heart rate training zone using your resting heart rate, unlike simple percentage-of-max methods.
How to use
Enter your age, resting HR (measured at rest), and choose your desired intensity range. The calculator outputs your exact BPM training zone.
Example scenario
A 30-year-old with a resting HR of 65 BPM training at 65-85% intensity should target 151-172 BPM.
Pro tip
Measure your resting heart rate for 3 consecutive mornings and use the average for more accurate results.