What is corrected age?

Written by Yuppo Lab Experts.

Updated 27 October 2026

Corrected age, also called adjusted age, is a premature baby's actual age minus the number of weeks they were born early. Doctors use it to assess growth and development, usually until around age 2.

How do you calculate it?

Subtract the number of weeks your baby was born early from their actual age. For example, a baby born 8 weeks early who is now 6 months old has a corrected age of 4 months, so their milestones are compared with those of a 4-month-old.

Frequently asked questions

No. Vaccines are usually given by actual age, even for babies born early.

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