The Basal Metabolic Rate calculator measures the calories you use at rest to maintain normal bodily functions. This continual work accounts for about 60-70% of the calories we use burn each day, and it includes the beating of our heart, our breathing and respiration, plus the maintenance of body temperature.

To lose one pound of body weight per week, you will need to consume 500 less calories per day. The BMR calculator is just part of the equation. Check our other fitness tools and calculators to track the number of calories you are eating, and the amount you are using in daily activities.