Baby's Measurements, Explained

Pediatricians can learn a lot about how well your baby is growing from these three measurements, says Jennifer Shu, MD, coauthor of Heading Home with Your Newborn. Your doctor will take these at every checkup, starting at birth.

Measurement: Head Circumference

It tells doctors that baby's brain is developing correctly.

Average at birth: 14 inches

3 months: 16 inches

6 months: 17 inches

12 months: 18 inches

All measurements are on average.

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