Target Heart Rate Calculator
Karvonen / %HRmax training zones.
Frequently asked questions
What does the Target Heart Rate Calculator do?
Karvonen / %HRmax training zones. Enter your values and get an instant estimate in your browser — free, with no signup.
Is the Target Heart Rate Calculator free to use?
Yes. OpenCalcy calculators are free to use, work on mobile, and keep favorites privately in your browser.