A 1-year-old typically sleeps 10 to 12 hours at night, with the total recommended sleep for this age being 11 to 14 hours per 24-hour period (including naps). That recommendation comes from the American Academy of Sleep Medicine, and it applies to children ages 1 through 2. The nighttime portion makes up the bulk of that total, with the remaining 1 to 3 hours covered by daytime naps.
How Nighttime and Nap Hours Break Down
At 12 months, most children are still taking two naps a day, each lasting roughly 1 to 1.5 hours. That means if your child naps for a combined 2 to 3 hours during the day, they need about 10 to 11 hours of overnight sleep to land within the healthy range. Some toddlers on the higher end of the spectrum sleep closer to 12 hours at night and still nap well during the day, bringing their total near 14 hours.
There’s real variation from child to child. A toddler who consistently gets 10 hours at night plus a solid nap and wakes up alert and happy is likely getting enough, even if they fall on the lower end of the range. What matters more than hitting an exact number is whether your child seems well-rested: not chronically fussy, not fighting every waking moment, and able to engage and play normally.
The Shift From Two Naps to One
Somewhere between 12 and 18 months, most toddlers drop from two naps to one. This transition directly affects how much sleep shifts to nighttime. Common signs your child is ready include resisting the second nap, skipping naps entirely, taking unusually short naps, or suddenly waking in the middle of the night for long stretches.
If your child is regularly getting less than 10 hours of overnight sleep while still on a two-nap schedule, moving to one nap may actually help lengthen the nighttime stretch. During the transition, you can expect a few rocky weeks where nap timing feels unpredictable. Most families settle into a single midday nap of 1.5 to 3 hours, with nighttime sleep consolidating to 10 to 12 hours.
Why Sleep Falls Apart Around 12 Months
If your 1-year-old was sleeping well and suddenly isn’t, you’re likely dealing with the 12-month sleep regression. This is one of the more common disruptions, and it typically lasts only a few weeks. Several things converge at this age to interrupt sleep:
- Physical development: Pulling up, cruising, and early walking create restlessness and overstimulation that can make it hard to settle down.
- Separation anxiety: Emotional and social development peaks around this age, making your child more distressed when you leave the room at bedtime.
- Teething: The first molars often arrive around 12 to 14 months, and the pain can wake a child multiple times per night.
- Schedule changes: Adjustments to nap timing or new sleep routines can temporarily throw things off.
The reassuring part is that regressions are temporary. Keeping your routines consistent through the rough patch helps your child return to their normal sleep pattern faster.
Helping Your Toddler Sleep Through the Night
By 12 months, your child’s internal clock is well established. The hormone that drives sleepiness at night begins developing a reliable pattern around 9 to 12 weeks of age, and by 6 months, production reaches about 25% of adult levels. By a year old, your child’s body has a strong biological drive toward nighttime sleep, which means environmental and behavioral factors play the biggest role in whether that sleep actually happens uninterrupted.
When your toddler wakes at night and isn’t hungry, wet, or in pain, you can try a graduated approach to help them resettle. Start with less intervention: make eye contact, use your voice calmly. If that’s not enough, place a hand on their chest. Progress to holding their arms gently against their body, then picking them up and holding still before adding any rocking. The idea is to give your child the chance to calm down with the minimum amount of help, building their ability to return to sleep on their own over time.
Room environment matters more than most parents realize. The ideal bedroom temperature for toddlers is between 65 and 70°F, slightly warmer than the range recommended for adults. A room that’s too warm is one of the most common, and most fixable, causes of restless nighttime sleep. Keep the room dark and use white noise if outside sounds are an issue.
What Belongs in the Crib at Age One
The CDC recommends keeping soft bedding out of your baby’s sleep area, including blankets, pillows, bumper pads, and stuffed animals. While many parents assume these items become safe at 12 months, the official guidance doesn’t draw a hard line at the first birthday. A firm mattress with a fitted sheet remains the safest setup. If you’re concerned about warmth, a wearable sleep sack is a safer alternative to a loose blanket.
Does Diet Affect Overnight Sleep?
Many families transition from formula or breast milk to cow’s milk around the first birthday, and it’s natural to wonder whether the switch affects sleep. Research on toddlers and dairy suggests the impact is minimal. Studies comparing different types of milk formulas in children 14 to 24 months old found no significant differences in how quickly children fell asleep, how long they stayed asleep, or how often they woke up. In other words, the type of milk your toddler drinks before bed is unlikely to be the reason they’re waking at 2 a.m.
What does matter is making sure your child is eating enough during the day. A toddler who isn’t getting sufficient calories from solid foods may genuinely wake hungry at night. By 12 months, most children can get the nutrition they need from three meals and one or two snacks, reducing the need for overnight feeding.