See How Your Baby Grows: Age-by-Age Growth Chart for Children

Curious about your baby's development? Follow our age-by-age growth chart to see the average height and weight your child should have as he grows from baby to big kid. Learn about your baby's healthy growth standards and benchmarks.


baby wrapped in blanket

Anna Palma

The average newborn is 19.5 inches long and weighs 7.25 pounds. Boys have a head circumference of about 13.5 inches and girls measure in at 13.3 inches, according to the National Center for Health Statistics.

Birth to 4 Days Old

baby lying down

Fancy Photography/Veer

A baby drops 5 to 10 percent of his total body weight in his first few days of life because of the fluid he loses through urine and stool, says Parents advisor Ari Brown, M.D., author of Baby 411.

5 Days to 3 Months

Mom and baby

Kaysh Shinn

Babies gain about an ounce a day on average during this period, or half a pound per week, and they should be back to their birthweight by their second-week visit. Expect a growth surge around 3 weeks and then another one at 6 weeks.

Development Milestones: What to Expect at 3 months
Development Milestones: What to Expect at 3 months

3 Months to 6 Months

cute baby girl

Heather Weston

A baby should gain about half a pound every two weeks. By 6 months, she should have doubled her birthweight.

7 Months to 12 Months

baby crawling

Alexandra Grablewski

A child is still gaining about a pound a month. If you're nursing, your baby may not gain quite this much, or he may dip slightly from one percentile to another on the growth chart. "At this point, babies may also burn more calories because they're starting to crawl or cruise," says Tanya Altmann, M.D., a Los Angeles pediatrician and author of Mommy Calls. Even so, by the time he reaches his first birthday, expect him to have grown 10 inches in length and tripled his birthweight and his head to have grown by about 4 inches.

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