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Heart Rate Zone Calculator
Calculate 5 heart rate training zones
Note: Zones based on % of max HR (220−age). Z1:50-60%, Z2:60-70%, Z3:70-80%, Z4:80-90%, Z5:90-100%.
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⚠️ For educational and training purposes only. Consult a coach, physician, or certified trainer before making training or health decisions.
About the Heart Rate Zone Calculator
Calculate 5-zone heart rate training zones.