Baby Sleep Schedule by Age Calculator
See how much total sleep, night sleep, day sleep and how many naps a baby or toddler needs at a given age.
How it works
Total & nap count from age-band norms · Night ≈ 9 + min(age,12)×2.5/12 hrs · Day sleep = total − night
A baby’s total daily sleep falls gradually — from about 15 hours in the newborn months to roughly 11–12 hours by preschool age — while the split shifts steadily from day to night. Newborns take four or more short naps; by the first birthday most are down to two, and a single afternoon nap carries a child through the toddler years before disappearing. Using age-banded norms gives a realistic target rather than a single number.
Worked example
At 6 months the norm is about 14 hours total. Night sleep is roughly 9 + 6×0.208 ≈ 10.3 hours, leaving about 3.7 hours of daytime sleep spread across 3 naps — a little over an hour each.
Sources: AASM/AAP — Recommended Sleep by Age
Frequently asked questions
How much should my baby sleep?
Newborns need about 14–17 hours a day, 4–12 month-olds about 12–16 hours including naps, and 1–2 year-olds about 11–14 hours. These are ranges — a well-rested child who wakes happy is within their own normal.
When do babies drop to one nap?
Most children move from two naps to one between 15 and 18 months, keeping a single midday nap until somewhere between 3 and 5 years old. This tool reflects that typical progression.
Why does night sleep grow with age?
Newborns sleep in short cycles around the clock. As circadian rhythm matures over the first year, sleep consolidates into a longer overnight stretch, so night sleep rises while total sleep slowly falls.
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Typical planning estimate — every child differs. Follow your pediatrician for feeding and sleep decisions.