Baby Weight Percentile Calculator

A weight percentile shows how your baby's weight compares to other babies of the same age and gender. For example, the 50th percentile means your baby weighs more than 50% of babies and less than 50%. The 25th-75th percentile range is considered normal.

Pediatricians typically track weight at each well-baby visit: at 1, 2, 4, 6, 9, and 12 months in the first year. The trend over time matters more than any single measurement. Consistent growth along a percentile curve is usually healthy.

Not necessarily. Babies come in all sizes. What matters most is that your baby follows a consistent growth curve. A sudden drop across two or more percentile lines may warrant further evaluation by your pediatrician.