Multiply your current weight (in pounds) by 10 if you’re a woman or 11 if you’re a man. Estimate your basic energy needs. Factors vary according to age and activity level. DER differs from MER in that it includes activity necessary for work, gestation, lactation and growth, as well as energy needed to maintain normal body temperature. There are many calorie formulas to help you figure out how much you should eat in a day, and all of them are fairly accurate. These estimates are based on the Estimated Energy Requirements (EER) equations, using reference heights (average) and reference weights (healthy) for each age-sex group. Keep in mind, estimated energy requirement/eer is based on gender, height, age, weight, and activity level. One of the basic approaches to calculate your dog's Daily Energy Requirements (DER), uses the following formula: =(70x kg Bodyweight^.75 ) Then multiplier factors, such as 1.6 and 1.8, are applied to the result. Institute of Medicine (IOM) – (EER) Estimated Energy Requirement Equations: Estimated Energy Requirement (kcal/day) = Total Energy Expenditure + Energy Deposition Waltham DER Formula For Dogs daily energy requirement (DER) DER represents the average daily energy expenditure of any animal, dependent on lifestage and activity. For adults, the reference … X Research source The calories you eat from foods provides your body with energy. Everyone's daily caloric needs are different based on age, … Validity of predictive equations for resting energy expenditure in US and Dutch overweight and obese class I and II adults. American Journal of Clinical Nutrition, 88 (4), 959–70. MER 2008.The effect of an incremental increase in exercise on appetite, eating behaviour and energy balance in lean men and women feeding ad libitum. How to determine the Harris-Benedict equation? Energy requirements may be classified into those needed for maintenance, growth, pregnancy, lactation, and work. A calorie is a unit of energy that your body uses to function and perform daily life sustaining activities. For example: Sue is a 45-year-old female who weighs 155 pounds. She calculates her BMR like this: 155 pounds ÷ 2.2 = 70.45 kilograms Whybrow, S., et al. When calorie intake is too low, then muscle mass is broken down for energy, your metabolic rate begins to drop after 3 days of eating very low calories, and you risk nutritional deficiencies, fatigue, irritability and sluggishness. For children and adolescents, reference height and weight vary. However, they're not 100 percent precise. Also, you set yourself up to regain the fat if you suddenly begin eating again as you had previously. This daily energy needs calculator uses the Harris-Benedict Formula to estimate your average daily energy requirements so you can plan your energy intake. Or use the formula in table below, which factors in your age in addition to your sex. 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