Baby Growth Calculator
Calculate
Formula
Compares baby's weight and length to WHO growth chart median values for the closest age. Percentile ranges estimated by ratio to median. Weight: lbs x 0.4536 = kg. Length: inches x 2.54 = cm.
Frequently Asked Questions
What are baby growth percentiles?
Growth percentiles show how your baby compares to other babies of the same age. For example, the 50th percentile means your baby is average - half of babies weigh more and half weigh less.
How accurate is this calculator?
This provides simplified estimates based on WHO growth chart medians. For accurate percentile calculations, your pediatrician uses specific growth chart software that accounts for gender and exact age.
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