Baby Sleep Regression Age Tracker
Babies often go through predictable periods of disrupted sleep tied to developmental leaps, commonly around 4, 8-10, 12, 18, and 24 months. Enter your baby's birth date to see where they currently stand relative to these windows.
About this calculator
Find out which common sleep regression window your baby is in or approaching based on their birth date, so you can anticipate disrupted sleep and plan accordingly.
Frequently Asked Questions
Are sleep regressions guaranteed to happen?
No, not every baby experiences noticeable regressions, and timing varies. These windows are common patterns, not certainties.
How long do sleep regressions typically last?
Most regressions last 2-6 weeks as babies adjust to new developmental skills like rolling, crawling, or language development.
What can I do during a regression?
Maintaining consistent bedtime routines, ensuring adequate daytime naps, and being patient with temporary schedule disruptions tend to help most.