Baby Sleep Calculator
How much should your baby sleep? Enter age in months for daily sleep totals, nap guidance, and suggested bedtimes. Built on the expert ranges pediatricians reference.
Add a wake time to also get suggested bedtimes for this age.
Your recommended sleep range will appear here after you calculate.
How it works
Baby sleep changes faster than any other stage of life. A newborn may need 14 to 17 hours spread across the whole day and night, while a 2 year old needs 11 to 14 hours with most of it in one nighttime stretch plus a single nap. Those ranges come from the expert consensus endorsed by the American Academy of Sleep Medicine, and this calculator maps your baby's age in months to the right bracket automatically.
Enter the age in months and, if you have one, the usual morning wake time. You will get the total daily sleep range for the bracket, honest nap guidance for that stage, and a bedtime window counted back from the wake time. For newborns the bedtime suggestion matters less, since there is no day-night rhythm yet; from around 3 to 4 months, a consistent bedtime routine starts to pay off and the calculator's window becomes genuinely useful.
A few things the numbers alone do not tell you. Total sleep is what counts, not one perfect night: a baby who naps well and sleeps a solid night is fine even if no single stretch looks impressive. Brief awakenings between sleep cycles are normal deep into toddlerhood; the question is whether the baby settles back, not whether they stir. And overtired babies sleep worse, not better, which is why protecting the last nap of the day often fixes bedtime battles more reliably than pushing bedtime later.
Watch for the transition points. The drop from two naps to one usually happens between 12 and 18 months, and the drop from one nap to none typically lands between ages 3 and 5. Both transitions come with a few rough weeks; that is normal and not a sign the schedule is broken. Keep wake time and bedtime steady through the transition and most babies settle within a couple of weeks.
This page is a planning aid, not medical guidance. If your baby snores loudly, seems to pause breathing, struggles to breathe comfortably during sleep, or you are simply worried, your pediatrician is the right next step. For the general version covering every age, see the sleep needs calculator, and read how much sleep you need by age for the evidence behind these ranges. Our nap guide covers nap timing once your baby is past the newborn stage.
These calculators give planning estimates based on average sleep cycle timing. They are not medical advice and cannot diagnose sleep problems. If poor sleep persists, talk to a clinician.
Common questions
How much sleep does a 6 month old need?
12 to 16 hours per day, including 2 to 3 naps, per the AASM-endorsed consensus for infants (4 to 11 months). Night stretches get longer across this period.
How many naps does a 1 year old need?
Usually one nap a day. Toddlers (1 to 2 years) need 11 to 14 hours total per day, with most of it at night and a single daytime nap.
When do babies sleep through the night?
There is no fixed age. Night sleep consolidates gradually over the first year, and brief awakenings between cycles remain normal well into toddlerhood. The ranges above count total sleep across the whole day.
Does my newborn need a bedtime?
Not really. Newborns (0 to 3 months) need 14 to 17 hours spread across many short stretches of day and night, with no day-night rhythm yet. A bedtime routine becomes useful from around 3 to 4 months.
Is this medical advice?
No. These are population guidelines from an expert panel. If your baby snores, pauses breathing, or you are worried about their sleep, talk to your pediatrician.