This calorie calculator estimates your individual calories while breastfeeding and/or pregnant. It uses the Mifflin-St.Jeor Equation, which is what most health care professionals use to calculate calorie needs. In addition, it estimates the amount of calories you need as a result of physical activity, breastfeeding and/or pregnancy. 

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Please note that the results are just estimates, and do not guarantee weight loss, weight gain, an adequate milk supply or sufficient calories while pregnant or breastfeeding. Please also note that weight loss is NOT recommended while pregnant, so the resulting numbers for weight loss do NOT apply for moms who are pregnant. Please contact your health care provider if you are unsure how many calories you should be consuming while pregnant and/or breastfeeding.