ToolsTarget Heart Rate Calculator
Energy & fitness
Target Heart Rate Calculator
Training by heart rate keeps your effort honest. These zones show you where easy ends and hard begins, tuned to your own resting rate.
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Part of Seri Balance, one of Seri's health companions.
How it's calculated
We estimate your maximum heart rate as 220 minus your age, then use the Karvonen method, which factors in your resting heart rate, to set five training zones from recovery to all-out.
How to read your result
Most of your training should sit in the easy aerobic zones, with only a little time spent high. If the zones feel off, trust your breathing and perceived effort, since the age-based maximum is only an estimate.
Common questions
Measure your pulse for a minute first thing in the morning before getting up, or read it from a wearable over a few quiet days.
Method: Karvonen heart-rate-reserve method.