⚕️ For Informational Purposes Only
This calculator provides general guidelines based on standard recommendations and is not a substitute for professional medical or nutritional advice. Every baby is different — feeding needs, growth patterns, and developmental milestones vary.
Always consult your pediatrician or a registered dietitian for personalized guidance. Never adjust your baby's feeding based solely on calculator results.
By using this tool you acknowledge it is for informational purposes only. Read our full medical disclaimer.
Baby Growth Percentile Calculator
Track your baby's growth against WHO growth charts
Growth Chart FAQs
What do growth percentiles mean?
A percentile shows where your baby falls compared to other babies of the same age and sex. If your baby is at the 40th percentile for weight, it means 40% of babies weigh less and 60% weigh more. Being at a higher or lower percentile doesn't mean "better" or "worse."
Should I be worried if my baby is in a low percentile?
Not necessarily. Healthy babies come in all sizes. What matters is that your baby is growing consistently along their own curve. A baby who's always been at the 15th percentile and continues to track there is doing great. Concern arises when a baby drops significantly from their usual curve.
Why does my pediatrician use different charts?
The WHO charts (used here) are recommended for babies 0-24 months and are based on breastfed infants as the standard. The CDC charts are often used for older children. Your pediatrician may use either depending on your baby's age and feeding method.
When should growth be a concern?
Talk to your pediatrician if: your baby drops more than 2 percentile lines (e.g., from 75th to 25th), is below the 3rd or above the 97th percentile, or isn't gaining weight appropriately. Your doctor will evaluate the full picture including feeding, development, and family history.