Use your fixed time first: enter tomorrow’s wake-up goal to calculate bedtime, or enter when you plan to get into bed to compare wake-up options. BedtimePilot separates wind-down, getting into bed, aiming to be asleep, and waking up. All cycle timing remains an adjustable planning reference rather than a sleep-stage measurement.
Free planning tool
Runs in your browser
Build tonight’s timeline
Sleep cycles vary from person to person and across the night. We use 90 minutes as a planning reference, not a measurement of your actual sleep stages.
Start with the time that is fixed for tomorrow. The calculator works backward or forward using your selected planning duration, the time you usually need to settle, and a separate wind-down window.
BedtimePilot uses adjustable cycle timing as a planning reference. Actual sleep architecture varies by person and night, and this tool does not measure sleep stages.
Important limitations
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.