Baby Sleep Calculator
Enter your baby's age and wake time to get personalized nap schedules, wake windows, and the ideal bedtime based on pediatric sleep research.
Suggested Sleep Schedule
For 6-9 months old babies
Wake Up
7:00 AM
Nap 1
9:30 AM – 10:25 AM
~55 min
Nap 2
12:55 PM – 1:50 PM
~55 min
Nap 3
4:20 PM – 5:15 PM
~55 min
Bedtime
7:45 PM
Daily Sleep Needs
Total Sleep
12-14 hrs
Night Sleep
10-12 hrs
Day Sleep
2-3.5 hrs
Number of Naps
2-3
Transition to 2 naps often happens. Sleep training can be effective at this age.
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Download Free on iOSDisclaimer: This tool provides general guidance based on pediatric sleep research and AAP recommendations. Every baby is unique and may have different sleep needs. This is not medical advice. Always consult your pediatrician with concerns about your baby's sleep, especially if your baby has health conditions or you notice significant changes in sleep patterns.
Understanding Your Baby's Sleep Needs
This sleep calculator uses age-appropriate wake windows to create a personalized schedule for your baby. Wake windows are the key to preventing overtiredness and helping your baby fall asleep more easily.
Wake Windows by Age
- 0-2 months: 45-90 minutes awake between sleep
- 3-4 months: 1.5-2 hours awake between sleep
- 5-6 months: 2-2.5 hours awake between sleep
- 7-9 months: 2.5-3.5 hours awake between sleep
- 10-12 months: 3-4 hours awake between sleep
- 13-18 months: 4-5.5 hours awake between sleep
- 19-24 months: 5-6 hours awake between sleep
Tips for Better Baby Sleep
Consistency is key for healthy sleep habits. Watch for sleep cues like yawning, eye rubbing, and fussiness. Creating a calm pre-sleep routine helps signal to your baby that sleep time is approaching. If your baby is fighting sleep, they may be overtired - try an earlier bedtime or shorter wake windows.