Month-by-month sleep guide
12-Month-Old Sleep Schedule
- ⏰ Wake window: 3.5–4 hours
- 🍼 Naps per day: 2
- 🌙 Bedtime: 9:15 PM
- 😴 Total sleep: 12–14 hours
Reviewed by the BabyNapCalc Editorial Team — our content is reviewed for accuracy against pediatric sleep guidance (AAP/NSF). This is general information, not medical advice.
Twelve months — happy first birthday! Your baby is walking (or about to), “talking” in long streams of jargon, and running a steady 2-nap schedule on wake windows of 3.5–4 hours. Total sleep is 12–14 hours. The headline this month: a possible 12-month sleep regression, driven by walking and birthday excitement, plus the first real questions about the eventual move to one nap.
12-month-old sleep at a glance
Typical ranges for 12 months — every baby is different, so treat these as a starting point.
3.5–4 h
Between sleep periods
Full toddler-style windows
2
2 naps
One nap comes later
12–14 h
Naps + night combined
Typical for this age
Sample 12-month-old schedule
An example day with a 7:00 AM wake, built from this month’s midpoint wake windows. Use the mini calculator above with your real wake time.
10:45 AM – 12:15 PM
Nap 1
About 90 minutes
4:00 PM – 5:30 PM
Nap 2
About 90 minutes
9:15 PM
Bedtime
End of the day
The first birthday and the 12-month regression
Twelve months is a milestone in every sense: first steps, first words (or word-like jargon), first birthday — and a sleep schedule that mostly runs itself. Wake windows of 3.5–4 hours, two naps, and 12–14 hours of total sleep. The one watch-out: a 1–2 week sleep regression that often arrives with the walking breakthrough.
Wake windows of 3.5–4 hours
Four hours of awake time is the full toddler-style window, and it structures the day beautifully: up at 7, nap around 10:30, nap around 3, bed around 7:30–8. These long windows mean missed naps hit hard — a skipped nap plus an 11-hour day is a recipe for a rough bedtime. When the schedule wobbles (and around the birthday, it will), the toddler bedtime calculator can help you re-anchor the evening.
Two naps through the first birthday
Hold the 2-nap schedule through 12 months and beyond — the transition to one nap typically lands between 12 and 18 months, and 12 months is the earliest edge, not the average. Signs of genuine readiness: consistently refusing one nap for 2+ weeks despite good timing, or bedtime pushing unmanageably late. Birthday-week nap refusals don't count — that's excitement and disruption, not readiness. The nap calculator can map either schedule while you watch and wait.
The 12-month sleep regression
Learning to walk is a neurological earthquake, and it commonly brings 1–2 weeks of nap refusals, night wakings, and crib-standing practice sessions around the first birthday. Separation anxiety often surges at the same time. The treatment is gloriously boring: same wake time, same nap times, same bedtime, calm brief responses. Most babies come through it in under two weeks — and then walk straight into your heart down the hallway.
Looking ahead: the one-nap transition
Sometime in the next few months, one nap will start getting refused regularly, and the 2-to-1 transition will begin in earnest. When it does, the move is gradual: push the single nap toward midday (11:30–12), cap it around 2–2.5 hours, and use an early bedtime (6–6:30 PM) for months while the long day settles. Our wake windows by age guide covers the toddler windows ahead. For what's next month, see the 13-month-old sleep schedule. Enjoy the birthday — the sleep gets simpler from here.
12-month-old sleep questions, answered
Quick answers to the questions parents ask most about sleep at 12 months.
What is the 12-month sleep regression?
A 1–2 week disruption around the first birthday, driven by learning to walk plus a surge in separation anxiety. Nap refusals and night wakings are typical; consistency resolves it fastest.
What are the wake windows for a 12-month-old?
3.5–4 hours, with the longest window before bedtime.
When should a 12-month-old drop to one nap?
Most transition between 12 and 18 months. At 12 months, only drop if one nap is refused for 2+ weeks despite good timing — birthday-week refusals don't count.
How much sleep does a 1-year-old need?
About 12–14 hours in 24 hours: roughly 10–11 at night plus 2.5–3.5 hours across 2 naps.
This page is a planning guide based on general pediatric sleep guidance, not medical advice. Every baby is different — talk to your pediatrician with concerns about your baby’s sleep.