Find your baby weight-for-age percentile using the World Health Organization child growth standards for children from birth to 24 months. Percentiles compare your infant weight against a healthy reference population, so a value of 50 means about half of babies the same age and sex weigh less and half weigh more. There is a very wide healthy range, and the trend across visits usually matters far more than any single reading, since babies who track steadily along their own curve tend to be growing well. This tool uses the WHO LMS parameters to estimate a z score and convert it to a percentile. Enter the age in months, the sex, and the weight in kilograms or pounds to see where your baby sits. Everything is computed in your browser, and this is general information, not medical advice. Always discuss growth with your pediatrician.
Find your baby weight-for-age percentile using the World Health Organization child growth standards for children from birth to 24 months. Percentiles compare your infant weight against a healthy reference population, so a value of 50 means about half of babies the same age and sex weigh less and half weigh more.
Yes. Baby Weight Percentile Calculator is completely free, with no sign-up and no usage limits.
Yes. Baby Weight Percentile Calculator runs in any modern web browser. There is nothing to download or install.
Yes. Baby Weight Percentile Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.