Target Heart Rate Calculator
Find your maximum heart rate and target heart rate zones using the Karvonen (heart rate reserve) method.
Enter your values and press Calculate.
How to use the Target Heart Rate calculator
220 − age is an estimate that can be off by 10–20 bpm for individuals. Check with a doctor before starting a vigorous exercise programme, especially if you take heart medication.
Formula
Max HR ≈ 220 − age. Karvonen: target = (max − resting) × intensity + resting. Without a resting rate, zones are a straight percentage of max.
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