How much should my baby sleep?
Enter your baby’s age and see the recommended total sleep per 24 hours for their stage — split into night sleep and naps, with the typical number of naps. Ranges follow standard pediatric sleep references (AASM / National Sleep Foundation).
Age group: 4–5 months
Total sleep per 24 h
12–16 h
Night sleep
9–10 h
Daytime naps
4–5 h
Number of naps
3–4
General guidance for healthy babies — every child is different. This is not medical advice; talk to your pediatrician about your baby.
Reading the ranges
These are ranges for healthy children, not targets to hit exactly. A happy, thriving baby at the bottom of the range is fine; a miserable one in the middle of it may still need more. Judge by mood, feeding and daytime behaviour as much as by hours.
Total sleep drops surprisingly slowly across the first two years — what changes dramatically is its shape: night sleep consolidates and lengthens while daytime sleep shrinks from 4–5 scattered naps to one solid midday nap.
When the numbers look off
A day or two outside the range means nothing. Consistently sleeping far less — especially with a cranky, hard-to-please baby — usually points at wake windows that don’t fit, a nap transition underway, or a regression. Our wake window calculator and schedule generator are the quickest way to sanity-check the day’s structure.
If low sleep comes with snoring, laboured breathing, or concerns about growth or development, talk to your pediatrician — that’s beyond what any chart can tell you.
Frequently asked questions
Does night sleep or nap sleep matter more?
Both count toward the 24-hour total, but they’re not fully interchangeable: night sleep carries the deepest, most restorative stretches, and daytime naps prevent the overtiredness that sabotages nights. Protect both rather than trading one for the other.
My baby sleeps less than the range. Should I worry?
Not from the number alone. Some babies genuinely need less. Worry signals are the combination: well below the range and unhappy, hard to settle, or feeding poorly. In that case review the day structure first, then raise it with your pediatrician.
When do babies drop to one nap?
Most drop from two naps to one somewhere between 13 and 18 months, often around 14–15. The single nap then anchors to midday. Before 12 months, keep offering two naps even through rough patches — a 12-month sleep wobble is usually a regression, not nap-drop readiness.
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