The MET of various tasks have been widely studied, and our calculator estimates calories burned based on data made available through these studies.Ī person's body mass affects how many calories they burn, even at rest. Most estimates (including the ones provided by our calculator) involve the use of three key factors: body mass, duration of the activity, and the metabolic equivalent of a task (MET). The number of calories a person burns by performing a given activity is dependent on many different factors. For more information about basal metabolic rate, refer to our BMR calculator. Generally, the number of calories consumed, less calories burned through activities and basal metabolic rate (calories consumed - calories burned - BMR) will determine whether a person maintains, loses, or gains weight theoretically, if the number is 0, the person will maintain their weight if the number is negative, they will lose weight if the number is positive, they will gain weight. The formula and methodology used by this calculator are described below in the 'Calculating calories burned' section.įor more information on the number of calories a person should consume each day for weight maintenance, weight loss, or weight gain, refer to the Calorie calculator. The results of this calculator (and any other) are based on standardized data that references an 'average' person, so it is only an estimate. The number of calories that the body burns during regular daily activities or exercise is dependent on various factors, so it is not an exact science.

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