How big is your baby's stomach? (Photos)

Learning about the size of your baby's stomach can help you understand how much and how often your baby needs to feed. You may be surprised by how small his stomach actually is!
  • Hazelnuts.
    1 / 6

    Day one

    When your baby is first born, his stomach is no bigger than a hazelnut. Because of its small size, your baby will need to feed often to keep himself feeling full.

    References: Silverman 1961
  • Bowl of cherries.
    2 / 6

    Day two

    By the second day, your baby's stomach will be about the size of a cherry. Your baby will be able to take in a little more milk with each feed, but he will still need to feed every 90 minutes to two hours.

    References: Beststart 2009
  • Walnuts in a bowl.
    3 / 6

    Day three

    Three days after your baby was born, his stomach will have grown to about the size of a walnut. It's grown a lot from the day he was born!

    References: Beststart 2009
  • Apricots.
    4 / 6

    Days five to six

    Towards the end of your baby's first week, his stomach will have grown to the size of an apricot. Your baby should be putting on some weight now and be producing around six wet diapers a day.

    References: Beststart 2009
  • A large hen's egg.
    5 / 6

    10 days to two weeks

    The expansion of your baby's stomach will have slowed a little now. But by the time your baby is two weeks old, his stomach will be roughly the size of a large chicken egg.

    References: Beststart 2009
  • Grapefruit.
    6 / 6

    Adult

    Your baby's stomach will continue to grow until he becomes an adult. Once he is fully grown, his stomach will be about the size of a grapefruit.

    References: Silverman et al 1961

Track your baby’s development

Join now to receive free weekly newsletters tracking your baby’s development and yours throughout your pregnancy.
Trying to conceive?
By registering you agree to our Terms of Use & Privacy policy. We use your information to send you emails, product samples, and promotions on this website and other properties. We use your health information to make our site even more helpful.
advertisement