Skip to content
Siestita

12 months

12 month old sleep: schedule, naps & wake windows

One year! At 12 months most babies still do better on 2 naps, though the schedule starts to strain: windows up to 4.5 hours and the odd single-nap day. The real 1-nap transition usually happens between 13 and 18 months.

Total sleep
11–14 h
per 24 h
Wake window
3.5–4.5 h
Naps
2 (→1)
Night sleep
10–12 h
Day sleep
2–3 h
Bedtime
7:30–8:30 pm

How much sleep does a 12 month old need?

Between 11–14 h in total across the day: about 10–12 h at night and 2–3 h during the day, spread over 2 (→1) naps. These are guide ranges: if your baby wakes rested and cheerful, they’re probably getting what they need. Compare all stages in the baby sleep chart by age.

A bump of night wakings and broken naps is common at this age: check the sleep regressions guide before changing the schedule.

Wake windows at 12 months

The wake window at 12 months is 3.5–4.5 h: the time they can comfortably stay awake before needing sleep again. Overshooting the window usually means overtiredness, crying and shorter naps; undershooting means bedtime resistance. The first window of the day is usually the shortest and the last one the longest.

Don’t feel like clock-watching? The wake windows calculator gives you the exact range for the next nap.

Naps at 12 months

Expect 2 (→1) naps of 45 min – 1.5 h each. Two-nap days: both rather short. One-nap days: a single long midday nap and an earlier bedtime. Alternating both formats for a few weeks is the gentlest way to transition. Nap transitions and lengths by age are in the baby naps guide.

Sample schedule for a 12 month old

Based on a 7:00 am wake-up. Shift the times to your baby’s real wake-up, keeping the windows.

TimeActivity
7:00Wake up & breakfast
10:30Nap 1 (45 min – 1 h)
11:30Awake, play & lunch
15:15Nap 2 (45 min – 1 h)
16:15Awake, snack & walk
19:00Dinner, bath & routine
20:00Bedtime

The 12 month regression (first steps, language) can shake things up for a couple of weeks: don’t change the underlying schedule over a rough patch.

What time should bedtime be?

The usual range at 12 months is 7:30–8:30 pm. More than a fixed time, what matters is the window from the end of the last nap. A short, repeated bedtime routine (bath, pyjamas, story or song) helps them anticipate that sleep is coming.

FAQ

FAQs: 12 month old sleep

When to go from 2 naps to 1?

Most between 13 and 18 months (15 on average). Signs: taking very long to fall asleep for the morning nap, refusing it often, or the afternoon nap becoming impossible. Go gradual, pushing the morning nap 30 minutes later every few days.

How much should a 12 month old sleep?

Between 11 and 14 hours in total: 10–12 at night and 2–3 napping. From age one, the recommended range drops slightly compared with earlier months.

Did the birthday party wreck their sleep?

Routine changes (trips, celebrations, starting nursery) disrupt sleep for a few days. Return to the usual schedule without compensating with late extra naps and it usually resets itself in 3–5 days.

Baby sleep at other ages

Or go back to the baby sleep guide by age.

Wake windows change fast at 12 months

Siestita adjusts windows and schedules to your baby’s age automatically, and learns from their real sleep to tell you when the next nap is due.

Coming soon to the App Store and Google Play

Meanwhile, calculate their next nap right from your browser.

Try the nap calculator