Free Heart Rate Zone Calculator Online — Calculate training heart rate zones
Heart Rate Zone Calculator
How to Use the Heart Rate Zone Calculator
Enter your age (and optionally resting heart rate) to calculate your five training heart rate zones from recovery to maximum effort.
Which zone should I train in?
Zone 2 (fat burn) is best for endurance and weight loss. Zone 4-5 improves speed and VO2 max but should be used sparingly.
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