Heart Health
Body composition, nutrition, pregnancy and heart-health calculators based on WHO, NHS, ACOG and ACSM reference standards.
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Max Heart Rate Calculator
Estimate your maximum heart rate with five published equations — Fox, Tanaka, Nes, Inbar and the women-specific Gulati formula — with accuracy limits.
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Target Heart Rate Calculator
Calculate your five training heart-rate zones with the Karvonen (heart-rate reserve) method from your age and resting heart rate. Free and instant.