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Heart Rate Calculator
Estimate your maximum heart rate with three established formulas and get personalized training zones — from fat-burning to VO2 max — with optional Karvonen heart-rate-reserve math.
Educational estimate only — not medical advice. Maximum heart-rate formulas such as 220 minus age are population averages with a wide individual spread, and the training zones here are general guidance only. If you are pregnant, on heart-rate-affecting medication or have a cardiac condition, follow your doctor's targets instead.