Optimal schedule
01:15
Go to bed at:
Closest to the optimal recovery time for your age and current time to fall asleep.
09:00 often suits a flexible day, weekend or different work schedule. Even then, structure can help you choose a bedtime instead of relying on unplanned lie-ins.
Wake-up
9
Default time to fall asleep
15 min
Result
01:15
Your best bedtime is calculated immediately.
Results
Optimal schedule
01:15
Go to bed at:
Closest to the optimal recovery time for your age and current time to fall asleep.
Standard schedule
23:45
Go to bed at:
A balanced option for a practical compromise between sleep duration and your daily schedule.
Minimum schedule
22:15
Go to bed at:
A shorter fallback when you need complete cycles despite having limited time.
Short schedule
02:45
Go to bed at:
A shorter fallback when you need complete cycles despite having limited time.
This often applies to weekends, later shifts or a flexible schedule. The main challenge is avoiding a rhythm that drifts because bedtime becomes too late.
A later alarm does not automatically mean poorer sleep. Avoid filling the extra time with late-night activity and losing the benefit of a later morning.
Use the calculator on this page. The estimates include sleep cycles and a default 15-minute allowance for falling asleep.
Not by itself. Difficulties are more likely when this is very different from the rest of your week.
No. Sleep duration, consistency and how you feel on waking all matter.
If you are choosing between alarms, compare nearby schedules. This helps you see whether shifting your wake-up time by 30–60 minutes gives you a better sleep window.