Pregnancy
Breastfeeding Calorie Calculator
PanaKit's breastfeeding calorie calculator estimates your daily calorie needs while nursing, based on your weight, activity level, and how often you're breastfeeding. It adds the extra calories your body needs for milk production on top of your baseline needs, and runs instantly in your browser. Nothing you enter is stored or sent anywhere.
Calculate Your Breastfeeding Calorie Needs
Enter weight, height, age, activity, and lactation pattern to compute.
Estimated daily calorie total
2527 kcal/day
(maintenance + lactation allowance)
BMR (Mifflin-St Jeor)
1340 kcal/day
(at rest)
Maintenance (TDEE)
2077 kcal/day
(BMR × activity factor)
Lactation extra allowance
450 kcal/day
(by feeding pattern)
Estimated maintenance: 2077 kcal/day (Mifflin-St Jeor BMR 1340 kcal/day with your activity level), plus 450 kcal/day for lactation ⇒ about 2527 kcal/day total before micronutrient planning.
How it's calculated
The calculator starts with your estimated daily energy needs based on your weight, height, age, and activity level, then adds extra calories for milk production. Exclusive breastfeeding typically requires roughly 450 to 500 additional calories per day, while partial or combination feeding needs less, scaled to how much you're nursing. These figures follow standard postpartum nutrition guidelines and are estimates. Individual needs vary based on your baby's age, how much they're nursing, and your own metabolism.
Frequently asked questions
Most guidelines suggest around 450 to 500 extra calories per day for exclusive breastfeeding, on top of your normal daily needs. If you're combination feeding or your baby is nursing less frequently (starting solids, more formula), you'll need less than that, and the calculator adjusts for this based on your input.
Yes. Calorie needs are highest during exclusive breastfeeding in the early months and typically decrease as your baby starts solids and nurses less often. Recalculate periodically as your feeding pattern changes rather than relying on one estimate for the whole time you're nursing.
Calorie needs are driven by how much milk you're producing, not whether you're nursing directly or pumping. Enter your actual feeding frequency and volume as accurately as you can either way.
Significantly undereating can affect milk supply and your own energy levels. This calculator gives a general estimate, not personalized medical or nutrition advice. If you have concerns about your supply or intake, a lactation consultant or your healthcare provider can give guidance specific to your situation.