Bedtime calculator
Enter your child's age, this morning's wake time, and the time their last nap ended — get tonight's ideal bedtime instantly.
The wake window from nap end to bedtime is appropriate for 9 months. Aim for 6:00 PM–6:30 PM.
Methodology grounded in paediatric sleep research and evidence-based clinical practice. Schedule data, wake window recommendations, and regression timelines are derived from published guidelines including those of the American Academy of Sleep Medicine (AASM), the National Sleep Foundation, and paediatric sleep research published in peer-reviewed journals.
Read our full methodology →The numbers are the easy part
A calculator tells you when tonight's bedtime should be. It cannot tell you why last night fell apart, or what to change first. A Lunio plan is built from your child's age, current routine and the specific problem you are having — and you can start it tonight.