Baby Sleep Schedule Calculator

How this baby sleep schedule calculator works

Some days it feels like everyone else's baby got a manual and yours got improv night. This baby sleep schedule calculator gives you a starting point: enter your baby's age and this morning's wake-up time to get a sample day of naps and bedtime.

A wake window is how long your baby can comfortably stay awake before needing sleep again. The tool alternates age-typical wake windows and naps from your wake-up time, then sets bedtime at the end of the last window, aiming for the 6:30 to 8:30 pm zone.

Think of it as a gentle baby nap schedule generator that does the wake-window math so your 6 am brain does not have to. It is a sample rhythm, not a rulebook.

Baby sleep schedule by age

A baby sleep schedule by age changes more in the first two years than at any other point in childhood. Newborns barely tell day from night. Around 3 to 4 months, naps cluster into a loose pattern, and from there wake windows stretch while naps drop away in stages.

Here is how the pieces stack up, using ranges from the American Academy of Pediatrics, the National Sleep Foundation, and Cleveland Clinic. Every number is a range on purpose. Real babies live in ranges.

Age	Naps	Daytime sleep	Night sleep	Total per 24 h
0 to 3 months	4 to 5, variable	4 to 8 h	8 to 10 h, in pieces	14 to 17 h
4 to 6 months	3 to 4	3 to 5 h	9 to 11 h	12 to 16 h
7 to 8 months	2 to 3	2.5 to 4 h	10 to 12 h	12 to 16 h
9 to 12 months	2	2 to 3 h	10 to 12 h	12 to 16 h
12 to 18 months	1 to 2	2 to 3 h	10 to 12 h	11 to 14 h
18 months to 3 years	1	1 to 2.5 h	10 to 12 h	11 to 14 h (10 to 13 h from age 3)
3 to 5 years	0 to 1	0 to 1 h	10 to 13 h	10 to 13 h

The 24-hour totals from 4 months up are AAP-endorsed recommendations, naps included. The AAP sets no formal target under 4 months because newborn sleep is so variable; 14 to 17 hours is the Sleep Foundation's typical newborn range.

How many naps does your baby need?

If you have ever typed "how many naps" into your phone at nap two of an unknown total, you are in good company. As your baby stays awake longer, fewer naps fit into the day.

0 to 3 months: around 4 to 5 naps of anywhere from 30 minutes to 2 hours, with wake windows of 35 to 90 minutes. Predictability is not on the menu yet.
4 to 8 months: usually 3 naps of about 1 to 2 hours; the third shrinks to a catnap and disappears around 7 to 9 months.
9 to 14 months: 2 solid naps of 1 to 1.5 hours, one mid-morning and one early afternoon.
15 months and up: 1 afternoon nap of roughly 1.5 to 2.5 hours, often kept as quiet time until age 3 to 5.

Nap transitions, the wobbly weeks between nap counts, are famously messy. If you are mid-transition, treat this output loosely and lean on an earlier bedtime.

Making your sample baby schedule work in real life

A sample baby schedule works best held lightly: use the times as anchors and let the real day breathe around them.

Nap ran short? The next wake window often needs to shrink a little too.
Nap ran long? Gently wake your baby so bedtime does not slide toward double digits.
Clock versus cues: the schedule says when sleep is likely needed; eye rubbing, zoning out, or fussing says when it actually is. The baby usually wins.

This tool also doubles as a bedtime calculator: count one age-appropriate wake window forward from the last nap's end, and that is your target bedtime. On chaotic days, protecting that final stretch matters most.

Sources and method: this tool looks up the typical wake window and nap pattern for your baby's age, then lays the day out from your wake-up time using mid-range values. Where a published range is very wide, we use the lower middle so bedtime lands near the typical 6:30 to 8:30 pm zone. Ranges and totals come from the American Academy of Pediatrics (HealthyChildren.org), the American Academy of Sleep Medicine consensus endorsed by the AAP, Cleveland Clinic's wake windows by age, and the Sleep Foundation's guide to how much sleep kids need.

Frequently asked questions

What is a good sleep schedule for a 6 month old?

A typical 6-month-old day has three naps, wake windows of roughly 2 to 3 hours, and bedtime between about 7 and 8 pm. For example: wake at 7 am, naps around 9:30 am and 1 pm, a short late-afternoon catnap, then bedtime near 7:30 pm.

How many naps should my baby take by age?

Most newborns take 4 to 5 short naps a day, babies around 4 to 8 months take about 3, babies from roughly 9 to 14 months take 2, and toddlers from around 15 to 18 months settle into 1 afternoon nap. Many children keep some form of nap or quiet time until age 3 to 5.

What time should my baby go to bed?

For most babies past the newborn stage, a bedtime between about 6:30 and 8:30 pm works well. Bedtime is really just where the last wake window of the day ends, so it shifts with wake-up time and naps.

How long should baby naps be?

Naps of roughly 1 to 2 hours are typical for babies from about 4 months on, often with one extra 30 to 45 minute catnap late in the day. Newborn naps genuinely vary from 30 minutes to 2 hours or more.

Should I wake my baby from a nap?

Sometimes, yes. Many parents gently cap a very long or late afternoon nap so it does not push bedtime past a reasonable hour. Otherwise, most babies can be left to wake on their own. If long naps regularly shorten nights, mention it to your pediatrician.

Why won't my baby follow a sleep schedule?

Because babies are people, not clocks. Short naps, teething, illness, travel, and periods of rapid development all shuffle the day. A schedule is a rhythm to return to, not a rulebook to enforce. If most days land near the pattern, you are doing it right.

Baby sleep schedule calculator: your sample day