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Free Tool

Wake Window Calculator

Enter your baby's birthday to get today's wake window, nap count, and typical night sleep — pulled straight from the chart in The Calm Nights Method.

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Wake Window
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Naps / Day
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Night Sleep
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Weeks Old
Based on the wake-window reference chart in The Calm Nights Method, grounded in published infant circadian and sleep-cycle research (McGraw et al., SLEEP; Sheldon et al., Pediatric Research).

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