Bedtime by Age Calculator
The bedtime that produces enough sleep, worked backwards from wake-up time and age.
A child needing 10 hours of sleep should have lights out at 21:00, screens off by 20:00 and wind-down starting at 19:00 — the last of which is the step most routines skip.
Bedtime by Age Calculator
Frequently asked
Is the Bedtime by Age Calculator free?
Yes. Every tool on AlphaBetaMinds is free, needs no account and has no usage limit.
Does this tool store what I type?
No. It runs entirely in your browser. Your inputs are never sent to our server, and nothing is logged.
How accurate is it?
It uses the McCrindle generation boundaries (Gen Alpha 2010–2024, Gen Beta 2025–2039) and UN World Population Prospects vital rates. Sources and formulas are on our methodology page.
Can I use the result in an article or report?
Yes, with a credit and a link back to this page. See our terms of use for the full licence.
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