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
- Wake hour 0-23: 7
- Wake minute: 0
- Sleep cycles: 5
Results this page provides
- Suggested bedtime
How it works
Subtracts 90-minute cycles from the target wake time.
Best use cases
Pick a practical bedtime for a planned wake-up time.
Limitations
Falling asleep time and sleep quality are not included.