Wake Window

Baby nap calculator

Your baby’s next nap time is their wake-up time plus the typical wake window for their age. Enter both below to see the window.

Find the next nap time

Baby’s age

Next nap window

Pick your baby’s age

Then add the time they woke up. The next nap window appears right here.

First nap of the day, if your baby wakes at 7:00 AM

The same math the calculator uses, worked out for each age range.

AgeFirst nap window
0–1 month7:30–8:00 AM
1–2 months8:00–8:30 AM
3–4 months8:15–9:00 AM
5–6 months9:00–9:45 AM
7–9 months9:30–10:30 AM
10–13 months10:00–11:00 AM
14–18 months11:00 AM–12:30 PM

How nap times move through the day

Here’s a 6-month-old’s morning. Notice how the second window depends on when the first nap ends.

  1. 7:00 AMWakes up for the day
  2. 9:00–9:45 AMFirst nap window: 2 hr to 2 hr 45 min after waking
  3. 9:25 AMFalls asleep
  4. 10:25 AMWakes after a 1 hr nap. The clock starts again
  5. 12:25–1:10 PMNext nap window
An example for a 6-month-old, assuming a 1 hr nap that starts mid-window. Real naps vary, and each new window counts from when your baby actually wakes.

For your baby’s age, see the example day on its page, starting from wake windows by age.

Common questions

Can I plan every nap for the day in advance?

Only roughly. Each nap window depends on when your baby wakes from the nap before it, and nap lengths vary. Plan the next nap, then recalculate when your baby wakes.

How many naps should my baby take?

It changes with age and from baby to baby. This calculator doesn't set a number of naps; it tells you when the next one is likely to go well. Your pediatrician can help if you're unsure what's typical for your baby.

Wake WindowNext nap on your Lock Screen

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