How long your baby should nap depends on age, but a good general rule is to cap any single nap at about two hours if your baby takes multiple naps a day. Newborns are the exception, as their sleep is driven almost entirely by feeding cycles and can stretch three to four hours at a time. As babies grow, nap needs shift predictably: fewer naps, shorter duration, and longer stretches of awake time between them.
Nap Length by Age
Newborns (zero to three months) sleep roughly 16 hours a day, broken into naps of three to four hours each, spaced evenly around feedings. There’s no real distinction between “nap” and “nighttime sleep” yet. After one to two hours of being awake, most newborns need to sleep again. At this age, you generally don’t need to worry about naps being too long, though you may need to wake your baby to feed (more on that below).
Between four and six months, most babies settle into at least two naps a day, one in the morning and one in the early afternoon, with some still needing a shorter third nap in the late afternoon. Individual naps typically run one to two hours. The American Academy of Sleep Medicine recommends babies four to twelve months get 12 to 16 total hours of sleep per day, including naps.
From seven to twelve months, many babies still take two naps, though the late-afternoon nap usually drops around nine months. By ten to twelve months, some babies drop the morning nap too, consolidating daytime sleep into one longer midday stretch. For toddlers one to two years old, one afternoon nap of one to two hours is typical, and total daily sleep needs drop to 11 to 14 hours.
When to Wake a Sleeping Baby
Yes, sometimes you should wake a napping baby. If your baby takes two or more naps a day, cap any single nap at about two hours. For toddlers down to one nap, the ceiling is about three hours. Letting naps run much longer than this tends to steal from nighttime sleep, making bedtime harder and increasing early morning wake-ups.
Feeding is the other reason to wake a napper. For newborns, if it’s been longer than three to three and a half hours since the start of the last feeding, wake your baby and offer a feed, even if they seem content. This is especially important in the early weeks when consistent calorie intake supports healthy weight gain.
A consistent morning wake time also matters. Starting the day no later than about 8:00 a.m. (or 12 to 12.5 hours after bedtime) helps anchor your baby’s internal clock and keeps the rest of the day’s naps on track.
Why Nap Timing Matters for Bedtime
Your baby’s brain builds up a chemical need for sleep during every period of wakefulness. That pressure accumulates in minutes, not hours, meaning even a short stretch of extra awake time can tip a baby into overtiredness. But the flip side is also true: a nap that ends too close to bedtime drains so much of that sleep pressure that your baby won’t be ready to fall asleep at night.
For most babies, bedtime works best between 7:00 and 8:00 p.m. To protect that window, the last nap of the day needs to end early enough to leave a full wake period before bed. Those cutoff times shift with age:
- 3 to 4 months: last nap ending by 6:00 p.m.
- 5 to 7 months: last nap ending by 5:30 p.m.
- 7 to 10 months: last nap ending by 5:00 p.m.
- 11 to 14 months: last nap ending by 4:00 p.m.
- 14 months and older: last nap ending by 3:30 p.m.
If a late nap is pushing past these times, it’s fine to wake your baby. A short, slightly grumpy wake-up is a better trade-off than a bedtime battle at 9:30 p.m.
Wake Windows Between Naps
Wake windows are the stretches of time your baby can comfortably handle between sleep periods. Watching these windows is often more useful than watching the clock for a fixed nap schedule, because they account for how quickly your baby actually gets tired. Cleveland Clinic puts the ranges at:
- Birth to 1 month: 30 to 60 minutes
- 1 to 3 months: 1 to 2 hours
- 3 to 4 months: 1.25 to 2.5 hours
- 5 to 7 months: 2 to 4 hours
- 7 to 10 months: 2.5 to 4.5 hours
- 10 to 12 months: 3 to 6 hours
The last wake window of the day, right before bedtime, is typically the longest. For a five- to six-month-old, that pre-bedtime stretch is around two and a half to three hours. By seven to fourteen months, it widens to three to four hours. Keeping this final window long enough is what makes bedtime go smoothly.
When Babies Need More Sleep Than Usual
If your baby suddenly starts napping longer or more frequently, a growth spurt is a likely explanation. A study published in the journal SLEEP tracked infant growth and sleep day by day and found that increases in body length were directly linked to more sleep in the preceding 24 to 48 hours. During these bursts, babies slept up to four and a half extra hours or took up to three additional naps compared to their baseline. Every extra hour of sleep raised the odds of a measurable growth event by about 20 percent.
Developmental leaps, like learning to crawl, pull up, or walk, can also temporarily disrupt nap patterns. Some babies resist naps because they want to practice new skills. Others crash harder because the mental and physical effort is exhausting. These phases typically last a week or two and resolve on their own.
Signs Your Baby Is Ready to Drop a Nap
Nap transitions happen at roughly predictable ages: three naps to two around seven to nine months, and two naps to one around 14 to 18 months. But the real signal comes from your baby’s behavior, not the calendar. When moving from three naps to two, common signs include fighting or skipping the third nap entirely, taking much longer to fall asleep at regular nap times, and resisting bedtime or waking earlier in the morning.
The shift from two naps to one looks slightly different. You’ll notice the first nap starting to creep later in the morning, that first nap stretching longer than usual, and real difficulty falling asleep for the second nap. When these patterns persist for a couple of weeks (not just a few off days), it’s time to start consolidating. The transition period can be bumpy. Expect a few weeks of inconsistency where some days need two naps and others only need one.