About the project
A small tool for an ordinary nightly question
Sleep Better Timer turns bedtime arithmetic into a calm, private utility.
Last reviewed: · Sleep Better Timer
The site leads with the working calculator, then explains the assumptions behind it. The content is there to make the tool easier to judge, not to pad the page.
The calculations use a common 90-minute cycle approximation and an adjustable estimate for falling asleep. Real sleep is more complex, so the results are planning suggestions rather than measurements or medical guidance.
The first version runs without an account, database, or personal health profile. Preferences such as your usual wake time, bedtime, routine length, and checklist state stay in your own browser.
Who maintains it
The September 2026 revision used AI-assisted editing, direct source checks and automated calculation, link and translation checks. These checks are not medical review or native-speaker certification. Dates indicate a substantive content/source pass, not a clinical endorsement. Corrections remain possible.
How to use it safely
Use the calculator as a planning aid for ordinary nights. It does not replace a clinician, a diagnosis, or advice for persistent sleep problems.