Target Heart Rate Zone Calculator
The Target Heart Rate Zone Calculator estimates heart-rate ranges for exercise intensity. It can help you understand a general training zone from age and, when supported, resting heart rate.
Target heart rate methods
One common method uses the Karvonen formula: target heart rate = resting heart rate + intensity Γ (maximum heart rate β resting heart rate). Maximum heart rate is often estimated from age, although several formulas exist.
Using the calculator
Enter your age and resting heart rate if requested, then choose the desired intensity or zone. Resting heart rate should be measured while you are genuinely at rest for a more consistent estimate.
Use heart-rate zones carefully
Heart-rate formulas provide estimates and may not match an individual's true maximum heart rate. If exercise causes unusual symptoms or you have a condition affecting exercise safety, seek appropriate professional guidance.