How does a baby's stomach size change by day during their first year of life?

A baby's stomach size grows gradually during their first year of life. At birth, a baby's stomach is about the size of a cherry and can hold around 1-2 teaspoons of milk. By the end of the first month, it can hold about 2-3 ounces. As the baby grows, their stomach size increases, reaching around 4-6 ounces by the end of the first year. This growth allows the baby to consume more milk or formula as they develop and their nutritional needs change.