About this tool
Estimate your maximum heart rate (220 − age) and the five training zones. If you enter a resting heart rate it uses the Karvonen heart-rate-reserve method; otherwise it uses a percentage of max. Computed live in your browser.
Frequently asked questions
What is the Karvonen method?
It bases each zone on your heart-rate reserve (max minus resting) rather than max alone, giving more personal targets. Add a resting rate to use it.
How is max heart rate estimated?
It uses the common 220 minus age formula. This is a rough population estimate, so your true max may differ.