12 months old sleep schedule

Updated 2026-08-22 · Source: AASM (AAP-endorsed) · Free · No sign-up

TOTAL SLEEP PER 24 HOURS

11–14 hours

Published by the American Academy of Sleep Medicine and endorsed by the AAP, including naps. This is the part of any sleep schedule that is actually guidance.

AASMAAP-endorsed

Convention, not guidance. The nap count and wake windows below are not published by any medical body. Which parts of a sleep schedule are actually published →

A sample day at 12 months

Built from a 7:00am wake-up. Change the wake time in the tool to shift the whole day.

7:00am

Wake for the day — your input

10:53am – 12:38pm

Nap 1 — 3h 53m awake, then about 1h 45m asleep

4:31pm

Bedtime — 3h 53m after the last nap ended

Each nap starts one wake window (3h 53m) after the last sleep ended; bedtime is one more after the final nap. Nap length is assumed at about 1h 45m.

Build this from your own baby's wake time →

What is typical at 12 months

The published range steps DOWN at the first birthday — the AASM's figure for 1 to 2 years is 11 to 14 hours, not the 12 to 16 that applied the month before. Most one-year-olds are still on two naps; the drop to one is more commonly between 14 and 18 months.

Naps at this age: 1–2. Awake between sleeps: 3h 30m to 4h 15m. Longest night stretch: 10–12 hours at a time.

What most babies are doing at 12 months

The CDC publishes a milestone checkpoint at exactly this age. These are the things 75% or more of children can do by 12 months.

Social and emotional

Plays games with you, like pat-a-cake

Language

Waves "bye-bye"
Calls a parent "mama"/"dada" or a special name
Understands "no" (pauses or stops)

Learning and problem-solving

Puts something in a container
Looks for things they see you hide

Movement

Pulls up to stand
Walks holding on to furniture ("cruising")
Drinks from a cup without a lid, with help
Picks up small things with thumb and finger

The CDC does not link these milestones to sleep, and neither do we. They are here because much of what changes about sleep at a given age is really what is changing about the baby. Source: CDC, Learn the Signs. Act Early.

Safe sleep, source conflicts and what this is not — the AAP safe-sleep rules, where the AASM and the National Sleep Foundation disagree, and why this is not a sleep-training method: read the full guidance notes. General guidance, not medical advice.

↥ Try another age → Browse all ages →

FAQ

How much should a 12 months old sleep?

11–14 hours per 24 hours including naps, per the American Academy of Sleep Medicine, endorsed by the AAP.

How many naps at 12 months?

1–2 is the conventional range at this age. No medical body publishes nap counts — this is convention, and healthy babies fall outside it.

What are wake windows at 12 months?

Conventionally 3h 30m to 4h 15m awake between sleeps. Wake windows are not published guidance from any medical body, whatever a schedule page implies.