Infant Nap Calculator (4-11 Months)

Unlock Consistent Naps for Your Growing Baby

As your baby grows, their sleep needs change. From 4 to 11 months, wake windows get longer, and naps consolidate. This calculator helps you stay on top of their shifting schedule.

Select your infant's age and enter their last wake-up time to find the sweet spot for their next nap.

Infant Nap Calculator

Enter your baby's age and the time they woke up to see their next ideal nap window.

Baby's Age:

Woke Up At:

Note: Calculator output is an estimate based on published sleep‑science guidelines. Your individual needs may vary. If you have a diagnosed sleep disorder, chronic health condition, or persistent problems, speak with a qualified healthcare provider for personalised advice.

How This Calculator Works

This tool uses average wake windows for infants, which get progressively longer as they grow:

4-5 Months: Wake windows are typically 1.5 to 2.5 hours.
5-7 Months: Expect wake windows of 2 to 3 hours.
7-10 Months: Wake windows stretch to 2.5 to 3.5 hours.
11+ Months: Your baby can likely stay awake for 3 to 4 hours.

Following these windows helps prevent an overtired baby, leading to easier naps and better night sleep.