The Baby Tummy Size Guide

Baby tummy massage. woman's hands do massage of baby's tummy.

Did you know the size of your baby’s stomach will start as small as a cherry and grow as big as a cantaloupe within the first year? When thinking about your baby’s consumption and how often they are feeding, it is helpful to visualize the size of their stomach throughout the feeding journey. When they are newborns, they feed very frequently due to the small stomach size, but by one year, they can consume solid meals and sleep through the night without eating.

1 Day Old:

Your baby’s stomach is the size of a cherry. Your baby will be consuming ½ -1 teaspoon (5-7 ml) per feeding; 8-12 feedings daily.

3 Days Old:

Your baby’s stomach is the size of a walnut. Your baby will be consuming 4 teaspoons (5-7 ml) per feeding; 8-12 feedings daily.

1-3 Weeks Old:

Your baby’s stomach is the size of an apricot. Your baby will be consuming 1.5-3 oz. (45-00 ml) per feeding. Your baby’s milk intake will increase to 9-25 oz. (280-750 ml) a day by the end of the third week; 8-12 feedings daily.

1-3 Months Old:

Your baby’s stomach is the size of a an egg. Your baby will be consuming 3-5 oz  (80-150 ml) per feeding. Your baby’s milk intake will be in the range from 20-35 oz (750 – 1035 ml) per day; 6-8 feedings daily.

3-6 Months Old:

Your baby’s stomach is the size of a an orange. Your baby will be consuming 3-5 oz (80-150 ml) per feeding.  Your baby’s milk intake will be in the range from 24 to 32 fluid oz (710 to 946 ml) per day; 6-8 feedings daily. 

6-11 Months Old:

Your baby’s stomach is the of a grapefruit. Your baby will be consuming 5-8oz. (147-236 ml) Per feeding.  Your baby’s milk intake will be in the range from 20 to 30oz (591 to 887 ml) per da ; 4-8 feedings daily + 1-3 meals of solids.

12 Months +:

Your baby’s stomach is the size of a a cantaloupe. Your baby will be consuming anywhere from none to 14 to 20 fluid ounces (414 to 591 milliliters) feeding; up to 4 times daily + 3 meals and up to 2 snacks daily.