Sports heart rate calculator.

A heart rate calculator is a tool that helps measure the intensity of physical activity by calculating the heart rate of an individual during exercise. It helps individuals to stay in their desired heart rate zone, which is important to maximize the benefits of exercise and avoid unnecessary strain on the heart. The calculator typically requires input of basic information such as age and resting heart rate and uses this data to provide accurate heart rate range during exercise. This allows individuals to adjust their workouts to ensure they are getting the most out of their fitness routine.