Baby Weight & Length Percentile Chart
Enter your baby weight and length to see their growth percentile compared to WHO standards. Birth to 24 months.
Understanding Growth Percentiles
Growth percentiles compare your baby to other babies of the same age and gender using WHO (World Health Organization) growth standards. The 50th percentile means your baby is right at the average. The 75th percentile means 75% of babies that age weigh less. Any percentile between the 5th and 95th is considered normal. What matters most is not the specific percentile but whether your baby is following their own growth curve consistently over time.
When to Be Concerned
Falling off their curve: If a baby drops from the 60th to the 20th percentile over 2-3 visits, that warrants investigation — even though 20th percentile is technically normal. Below 3rd or above 97th: These extremes may need evaluation but are not automatically concerning — some babies are simply small or large. Most important: Consistent growth along ANY curve is healthy. A baby consistently at the 15th percentile is thriving; a baby dropping from the 80th to the 15th needs attention.
Baby growth percentile calculator has exceptional engagement — new parents check obsessively, often after every pediatrician visit. Users average 4+ minutes on page and frequently explore related baby and pregnancy calculators. The parenting audience is highly valuable for baby product advertisers ($5-12 CPC).
