Heart Rate Zones
Training zones from your age and resting heart rate.
Enter values
years
bpm
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The formula
max HR = 220 − age; zone = rest + %·(max − rest) (Karvonen)
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Frequently asked questions
What is the Karvonen method?+
It sets zones as a percentage of your heart-rate reserve (max minus resting), then adds your resting rate back — a more personalised range than a plain percentage of max.
Is 220 − age exact?+
It is a common estimate of maximum heart rate, but individuals vary by roughly ±10–12 bpm.
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