New Growth Chart for Premature Babies

From little acorn to mighty oak, these growth charts help you track progress.


tali ditye author mommyhood101  By: Tali Ditye, Ph.D., Co-founder
  Updated: January 1, 2026

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A recent scientific paper gathered the results from several studies examining the head circumference, weight, and length (height) of premature babies.

This is an excellent resource for predicting a baby's weight, length and head circumference before birth, and also tracking the appropriate growth of a premature baby through the first several weeks of life.

Want to see how your baby's growth compares to others? Use our free baby growth chart calculator! Be sure to enter a corrected age (actual age in months minus how many months premature your child was born; for example, if your baby is 6 months (26 weeks) old and was born 1 month (4 weeks) early, then enter 5 months into the calculator when it asks for age.

The Growth Chart for Premature Babies

Note that weight in kilograms can be multiplied by 2.2 to convert to pounds (so that 1 kilogram equals 2.2 pounds, 2 kilograms equals 4.4 pounds, etc).

Premature baby growth chart

This figure was extracted under open source license from the following article:  Fenton, T. R. A new growth chart for preterm babies: Babson and Benda's chart updated with recent data and a new format. BMC Pediatrics, 3, 13.

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