NappyTi.me helps you choose a bedtime that lines up with complete sleep cycles instead of guessing. Pick a wake-up time and the calculator works backward through 90-minute cycles, adds a realistic fall-asleep buffer, and gives practical bedtime options you can actually use tonight.
The tool combines sleep-cycle timing, age-based sleep needs, optional nap planning, and calming audio in one lightweight page. The goal is not to diagnose sleep problems; it is to make everyday sleep planning easier and more evidence-based.
The site also includes original guides on sleep stages, caffeine timing, screen exposure, bedroom environment, shift work, nutrition, breathing exercises, and power naps. Claims are checked against sources such as NIH, CDC, AASM, Sleep Foundation, and peer-reviewed sleep research.
No account is required, the core tools run in the browser, and the site keeps commercial content disabled while quality review is pending. Readers can review the methodology, editorial policy, privacy policy, contact page, and source links from every major section.
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