Calculate your TDEE while breastfeeding. See how many extra calories nursing requires and get safe weight loss targets.
Breastfeeding burns an additional 300–500 calories per day. Most lactating women need at least 1,800 calories/day to maintain milk supply — many need 2,200–2,500+. Aggressive calorie restriction can reduce milk production and nutrient quality. If you want to lose weight while nursing, aim for a very modest deficit (10–15% below TDEE, not more).
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If provided, uses the more accurate Katch-McArdle formula
Calorie needs for breastfeeding mothers vary based on age, weight, height, and activity level. The calculator above gives you a personalized TDEE. As a general range, most breastfeeding mothers need between 1,600 and 3,200 calories/day for maintenance.
The Mifflin-St Jeor equation used here is the most validated BMR formula for adults. For breastfeeding mothers, the estimate is a solid starting point — track your weight for 2–3 weeks and adjust up or down based on real results.
Very gently. A moderate deficit of 300–500 calories below TDEE is generally considered safe and won't affect milk supply. Never go below 1,800 calories/day. Losing 0.5kg/week is a safe target. Rapid weight loss can release toxins into breast milk. Consult your doctor.