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Heart Rate Zone Calculator
Uses Karvonen (HR Reserve) formula for personalized zones
Age
−
+
Resting heart rate (bpm)
−
+
Gender (affects MHR formula)
Male
Female
Max heart rate method
Tanaka: 208 − 0.7×age
Fox: 220 − age
HUNT: 211 − 0.64×age
Custom (measured)
Your measured max HR (bpm)