Breastfed and formula-fed babies grow at different rates. In general, breastfed babies tend to be leaner, which is healthier, especially in the long run. Here's a general guide to the growth of breastfed babies during the first year:
Weight gain of 4-7 ounces (112-200 grams) a week during the first month
An average of 1-2 pounds (1/2 to 1 kilogram) per month for the first six months
An average of one pound (1/2 kilogram) per month from six months to one year
Babies usually grow in length by about an inch a month (2.5c.m.) during the first six months, and around one-half inch a month from six months to one year.