normal growth rates
The average growth rate of babies in weight from birth to six months is seven pounds to 12 pounds or three to five kilograms.From six months to the first year of life, the normal weight gain in babies is five to seven pounds or two to three kilograms.ealthy babies gain a pound every month from six months to a year. The average growth rate of babies in weight from birth to six months is seven pounds to 12 pounds or three to five kilograms. From six months to the first year of life, the normal weight gain in babies is five to seven pounds or two to three kilograms.