Your maximum heart rate (max HR) is the highest your heart can safely beat during all-out effort, and it sets the basis for every training zone. Enter your age to get your max HR using the Tanaka formula (208 − 0.7 × age), which is more accurate than the old 220 − age rule, plus your full set of zones.
Enter your age and click Calculate to see your heart rate zones.
A doctor can discuss your symptoms and help you decide what to do next.
