Free heart rate zones calculator: enter your age and optional resting heart rate to see five target zones by max-HR or Karvonen method. Estimate only. 100% Local
How to Use the Heart Rate Zones Calculator
Enter your age and, optionally, your resting heart rate, then press Calculate Zones. The result updates as you type.
How it works
Maximum heart rate is estimated with the common 220 minus age formula.
Without a resting rate, zones are percentages of maximum.
With a resting rate, the Karvonen method uses heart rate reserve for a personal range.
Features
Five training zones with bpm ranges
Max-HR method, or Karvonen with a resting rate
Estimated maximum heart rate shown
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