How to use this tool
Enter your values, run the tool, then review the result cards. Most tools update automatically when inputs change, so you can test several scenarios quickly.
Example inputs
- Bed hour 0-23: 23
- Bed minute: 0
- Sleep cycles: 5
Results this page provides
- Wake time
How it works
Adds 90-minute sleep cycles to the entered bedtime.
Best use cases
Plan wake times around common sleep-cycle estimates.
Limitations
Sleep cycles vary by person and night.