There is no set amount of calories that you should be consuming per day when you're a breastfeeding mom. This is because everyone’s needs are different, influenced by things like your age, how much activity you do, whether or not you are exclusively breastfeeding, and your body mass index. But in general, experts recommend that you aim to consume an additional 330 to 400 kilocalories (kcal) per day than what you would normally eat.