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This table is based upon a dog's Resting Energy Requirements or RER. The RER is the basic amount of energy that a dog would use in a day while remaining at rest. The formula to calculate RER for animals between 2 and 45 kg (5 - 99 pounds) is: RER in kcal/day = 30(body weight in kilograms) + 70. Any activity or variable other than rest will require an increase in energy (RER) and an increase in calories to meet the energy needs. Realize that these numbers are not a reflection of maintenance calories but of resting energy levels.
Functions. You can use your basal metabolic rate, or BMR, to determine how many calories your body burns at rest. BMR accounts for 60 to 75 percent of your caloric burn for the day, notes the Mayo Clinic. You can calculate your BMR using a formula based on gender, age, height and weight. However, it does not take into consideration your body's composition. And the more muscle you have, the more calories your body will burn.