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Baby Percentile Calculator

Track your baby's growth with WHO/CDC percentile standards. Enter your baby's measurements below to see how they compare to other children of the same age and gender. For day-to-day context, many families pair these measurements with ParentWise visual guides or explore relationship snapshots in FamilyBonds to see how caregiving dynamics support healthy growth.

Growth patterns differ between boys and girls. Select your baby's gender for accurate percentile calculations.

Enter your baby's exact age. For newborns under 1 month, just enter 0 years and the number of weeks or days as months (e.g., 2 weeks = 0.5 months).

Measure without clothes for most accurate results. Check weight at regular pediatrician visits.

Measure lying down for babies under 2. Use a measuring tape from head to heel with legs straight.

Measure around the largest part of the head, just above the eyebrows and ears. Most important in first 2 years.