Normal Weight Gain


Weight Gain
Weigh the infant completely undressed. Normal newborns may lose up to 12% of their birth weight during the first 3 to 7 days of life with earlier and slightly more accentuated weight losses in exclusively breastfed newborns.
A weight loss of up to 10% is acceptable if the infant's examination, stooling, and voiding frequency and behavior are normal.
On average, infants gain between 20 and 30 grams (1 oz) per day in the first 3 months of life and between 15 and 20 grams per day for the next several months
 
 
Average Daily Weight gain
Age Ounce Grams
0-3 month 1 oz 26-31 g
3-6 month 1/2 oz 17-18 g
6-9 month 1/3 oz 12-13 g
9-12 month 1/4 oz 9 g
1-3 yr 1/4 oz 7-9 g
4-6 yr 1/8 - 1/4 oz 6 g
Average Monthly Weight Gain
Age Lb Kg
0-3 month 2.2 lb/mo 1 kg/mo
3-6 month 1.1 lb/mo 1/2 kg/mo
6-9 month 3/4 lb/mo 1/3 kg/mo
9-12 month 1/2 lb/mo 1/4 kg/mo