BedtimePilotSleep duration · Free web tool
To plan 6 hours of sleep, work backward 360 minutes from your wake-up goal, then allow separate time to settle and wind down. The calculator below uses the duration directly, without rounding it to a sleep-cycle boundary. Planned time is not proof of actual sleep, and individual sleep needs vary.
Clock-time example. Dates and daylight-saving changes can affect the actual schedule.
For a 7 AM alarm, six planned hours put the sleep target at 1 AM. Settling and wind-down must happen before that. If an evening commitment ends too late, do not interpret the calculated time as reassurance that six hours is enough. Consider which optional tasks can move earlier or to another day, and protect a longer sleep opportunity when possible.
Results are planning estimates based on your times and adjustable settings. They do not detect sleep stages and are not medical advice. Do not reduce your sleep opportunity just to match a cycle count. Seek professional care for persistent sleepiness or sleep-health concerns.
Reviewed for calculation logic, source links, and non-medical product claims.
Use it in context
For a 7 AM alarm, six planned hours put the sleep target at 1 AM. Settling and wind-down must happen before that. If an evening commitment ends too late, do not interpret the calculated time as reassurance that six hours is enough. Consider which optional tasks can move earlier or to another day, and protect a longer sleep opportunity when possible.
Move the wake-up input one hour later and every evening checkpoint moves one hour later, while the 360-minute sleep opportunity remains unchanged. Keep the wake-up goal realistic for your obligations.
Questions
No. There are no sleep-stage measurements in this calculator.
Yes. Set the fixed wake-up goal first, then review the planning duration and buffers.
The source links below explain sleep stages and adult duration guidance. They do not prescribe an exact alarm minute.
Learn about reusable plans and reminders in BedtimePilot. Exact duration transfer is not available yet.
BedtimePilot for iPhone