Growth Tools
Baby Growth Quick-Check
Compare your baby's growth with WHO international standards. Enter their details below and see how they're doing.
Let's measure up
Enter your baby's details
Based on WHO Child Growth Standards. Always consult with your pediatrician for personalized advice.
Common Questions
- What is a baby growth percentile?
- A growth percentile shows how your baby's weight or height compares to other children the same age and sex. A baby in the 50th percentile is exactly average. The 25th percentile means 25% of babies are smaller. Percentiles are based on WHO international growth standards.
- What is a normal growth percentile for a baby?
- Any percentile from the 3rd to the 97th is considered normal. What matters most is consistent growth along the same curve over time, not the specific number. Your pediatrician interprets percentile changes in the context of your child's full health picture.
- How often should I check my baby's growth percentile?
- Pediatricians check growth at every well-child visit — roughly at 1, 2, 4, 6, 9, and 12 months in the first year. Checking at home between visits is fine for peace of mind, but frequent weigh-ins can cause unnecessary worry due to normal fluctuations. Your pediatrician may recommend more frequent monitoring for premature or low-birth-weight babies.
- What growth charts does this calculator use?
- This calculator uses the World Health Organization (WHO) growth standards, which are recommended by the AAP and CDC for children under 2 years old. WHO charts are based on breastfed infants from six countries and represent optimal growth patterns.
For educational purposes only — not a substitute for professional medical advice. Always consult your pediatrician with questions about your child's health.