What are wake windows?

Wake windows are the optimal amount of time your baby should be awake between sleep periods. They range from 45-60 minutes for newborns to 4-5.5 hours for toddlers. Following wake windows helps prevent overtiredness.

When do babies drop to one nap?

Most babies transition from two naps to one between 12-18 months. Signs of readiness include resisting the second nap, taking very long naps, or having difficulty falling asleep at bedtime.

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Baby Sleep Calculator

Find the recommended sleep schedule for your baby's age. See total sleep hours, nap frequency, wake windows, and sample routines from newborn to 24 months.

Last updated: April 1, 2026

Age

months

Wake-up Time

Naps (optional)

How to Use This Calculator

Enter your baby's age in months (0-24).
Click Calculate to see the recommended sleep schedule.
Review total sleep hours, nap details, and wake window guidance.
Use the sample schedule as a starting point for your routine.

The Formula

Sleep recommendations based on AAP and National Sleep Foundation guidelines. Newborns: 14-17 hours total. 4-11 months: 12-15 hours. 1-2 years: 11-14 hours. Wake windows increase with age.

Frequently Asked Questions

Sleep needs vary by age: newborns need 14-17 hours, 4-11 month olds need 12-15 hours, and 1-2 year olds need 11-14 hours. This includes both nighttime sleep and naps.