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Preemie Milestone Tracker
Until your child reaches 24 months, we track their milestones using their corrected age to account for their prematurity. Keep in mind that catching up is a range, not a single moment, so your baby will naturally follow their own timeline.
The whole timeline on one page
Milestone tracking — common questions
Should I track milestones by my baby’s adjusted age or actual age?
Use adjusted (corrected) age. Until about 2 years, a preemie’s development is measured from their original due date, not their birth date — so a baby born 8 weeks early is compared to other babies at their corrected age, not their birthday age. This tracker does that adjustment for you automatically.
What should I do if my baby hasn’t reached a milestone?
If your baby hasn't reached this milestone yet, simply act early by mentioning it to your pediatrician at their next visit to encourage an ongoing conversation about their development.
When do I stop using corrected age?
Most pediatricians stop adjusting at 24 months chronological age (the second birthday). For babies born very early, some specialists keep correcting a little longer. Once your baby turns 2, the tracker lets you know.
Is my baby’s information saved or shared?
No. Everything you enter stays on your own device in your browser — there’s no account and nothing is sent to a server. That also means your checklist won’t follow you to a different phone or computer.
This tracker is general information, not medical advice. Full disclaimer.
How we keep this accurate
Written by a preemie dad and grounded in CDC “Learn the Signs. Act Early.”, AAP, and March of Dimes guidance — checked against those sources. Use this as a conversation starter with your care team, not a substitute for it. Full disclaimer.
Free: The NICU Parent Starter Pack
Three printables in one file: the NICU survival checklist, the preemie clothing size guide, and the paced feeding quick-reference.
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