How do I use the Target Heart Rate Calculator?

Enter your age — this estimates your maximum heart rate (220 − age). Optionally enter your resting heart rate for the more accurate Karvonen method. View your 5 training zones instantly.

Is the Target Heart Rate Calculator free?

Yes, the Target Heart Rate Calculator on ToolHaven is completely free to use. No signup or registration is required.

Target Heart Rate Calculator

Find your target heart rate zones for exercise. Uses the Karvonen formula (with resting HR) or simple max-HR percentage method.

Age (years)

Resting Heart Rate (bpm)

How to use

Enter your age — this estimates your maximum heart rate (220 − age).
Optionally enter your resting heart rate for the more accurate Karvonen method.
View your 5 training zones instantly.

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