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Adjusted Age Calculator for Premature Babies

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adjusted (corrected) age
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chronological age
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born at GA

Work out your premature baby corrected age, the age adjusted for how early they were born, which pediatricians use to set fair expectations for milestones, feeding and growth in the first two years. A baby born eight weeks early will often reach developmental steps roughly eight weeks later than their calendar age suggests, so comparing them against full term charts by chronological age can cause needless worry. This tool takes your baby birth date and how many weeks premature they were, then subtracts that prematurity from the actual age to give the corrected age in months and weeks. Enter the birth date and weeks early to see both the chronological and adjusted ages side by side. Correction is typically applied until about age two, when most preemies have caught up. Everything is calculated in your browser, and this is general information, not medical advice. Your pediatrician will guide how long to keep adjusting.

Frequently asked questions

What is Adjusted Age Calculator for Preemies?

Work out your premature baby corrected age, the age adjusted for how early they were born, which pediatricians use to set fair expectations for milestones, feeding and growth in the first two years. A baby born eight weeks early will often reach developmental steps roughly eight weeks later than their calendar age suggests, so comparing them against full term charts by chronological age can cause needless worry.

Is Adjusted Age Calculator for Preemies free to use?

Yes. Adjusted Age Calculator for Preemies is completely free, with no sign-up and no usage limits.

Does Adjusted Age Calculator for Preemies work in a web browser?

Yes. Adjusted Age Calculator for Preemies runs in any modern web browser. There is nothing to download or install.

Is my data private with Adjusted Age Calculator for Preemies?

Yes. Adjusted Age Calculator for Preemies runs entirely on your device in your browser, so nothing you enter is uploaded to a server.