Heart Rate Zone Calculator
Calculate your target heart rate training zones using the Karvonen formula. Enter age and resting heart rate to see all five intensity zones.
years
bpm
How to Use This Heart Rate Zone Calculator
Enter your age and resting heart rate (measure first thing in the morning for accuracy). The calculator uses the Karvonen formula to compute your maximum heart rate and five training zones from low intensity to maximum effort, each with a target heart rate range.