Calculating your BMR may be quite a difficult process. The formula used for BMR is different for both the genders. One of the easiest and simplest ways in which you could calculate your BMR is by using the bmr calculator available here. The result you get will indicate how many calories your body actually requires to perform some of the most basic functions such as breathing, digesting food and carrying out daily activities. BMR also depends on the physical activity that you do throughout the day.