Wake Windows — Infant Nap Schedule & Wake Windows Planner

Wake Windows is a free, evidence-checked infant nap-schedule and wake-window planner. Enter your baby's age, wake time, and wake windows and it builds a same-day nap plan with loose guidance windows — anywhere in a window counts, these are ranges, not deadlines. Under about 6 months (corrected age) an infant's circadian clock is still maturing, so sleepy cues beat clock times.

What is a wake window?

A wake window is the stretch of time a baby is awake between one sleep and the next. It grows with age: a newborn may manage well under two hours, while a toddler can stay up for several. Wake windows are a practice-based estimate, not a validated rule, so the planner treats them as a starting point and lets your baby's cues have the final say. See wake windows by age for the published ranges.

What it does

• Generates a nap and bedtime schedule from wake windows and age.
• Interactive sleep troubleshooter for early waking, short naps, and false starts / split nights.
• Daylight-saving / timezone shift planner (ease the day over ~15 min/day).
• Local-first sleep & nap log and a read-only sitter/grandparent share link.
• No account, no AI, no data sold — everything stays on your device, one-click delete.

Sample sleep schedules by age

A sample day for each age, with clock times, nap counts, and total sleep.

• All ages — naps, bedtime and total sleep, newborn to 2 years
• Newborn sleep schedule
• 1 month old sleep schedule
• 2 month old sleep schedule
• 3 month old sleep schedule
• 4 month old sleep schedule
• 5 month old sleep schedule
• 6 month old sleep schedule
• 7 month old sleep schedule
• 8 month old sleep schedule
• 9 month old sleep schedule
• 10 month old sleep schedule
• 11 month old sleep schedule
• 12 month old sleep schedule
• 18 month old sleep schedule

Wake windows by age

How long babies stay awake between naps, from newborn to two years.

• Wake windows by age — how long babies stay awake between naps
• Wake window chart, newborn to 2 years
• Newborn wake windows
• 4 month old wake windows
• 6 month old wake windows
• 9 month old wake windows
• 12 month old wake windows

Why I built this

Built by John, a parent of twins, after reading every infant-sleep book they could find — because the only tools available needed a login or a subscription when all a tired parent needs is something to say what to do next. It's parent-built and evidence-compiled (every recommendation carries an evidence tier and a citation), not a substitute for your pediatrician.

Safe sleep

Place baby fully on their back for every sleep, day and night, until age 1. Use a firm, flat, non-inclined surface; no soft bedding, pillows, or bumpers. Room-share without bed-sharing, ideally for the first 6 months.

Evidence tiers

Guidance is labelled Tier 1 (evidence-based consensus and peer-reviewed norms), Tier 2 (practice-based heuristic — "wake windows" are a useful estimate, not a validated rule), or Tier 3 (practitioner convention). Guidance last reviewed 2026-06-07.

Key sources

• American Academy of Sleep Medicine — recommended sleep amounts (consensus)
• National Sleep Foundation — sleep duration recommendations
• WHO — sleep guidance for children under 5
• American Academy of Pediatrics — healthy sleep habits by age
• AAP — 2022 safe-sleep recommendations (SIDS)
• NICHD "Safe to Sleep" (US NIH)
• The Lullaby Trust (UK) — safer sleep overview

Informational only, not medical advice. Infant sleep needs vary widely; families should consult their pediatrician. The interactive planner needs JavaScript; the schedule and wake-window pages above do not.