Optimal schedule
21:15
Go to bed at:
Closest to the optimal recovery time for your age and current time to fall asleep.
A 05:00 alarm leaves little room for a long evening. Your morning target is already set, so you can compare a shorter emergency night with a fuller night of recovery.
Wake-up
5
Default time to fall asleep
15 min
Result
21:15
Your best bedtime is calculated immediately.
Results
Optimal schedule
21:15
Go to bed at:
Closest to the optimal recovery time for your age and current time to fall asleep.
Standard schedule
19:45
Go to bed at:
A balanced option for a practical compromise between sleep duration and your daily schedule.
Minimum schedule
18:15
Go to bed at:
A shorter fallback when you need complete cycles despite having limited time.
Short schedule
22:45
Go to bed at:
A shorter fallback when you need complete cycles despite having limited time.
This time often suits commuting, shift work or training before daily responsibilities. The focus is on consistent evenings and energy for a working day.
Consistency makes a difference. Falling asleep at a similar time each day can make an early alarm easier to manage.
The calculator estimates bedtimes from complete sleep cycles, aiming to put waking closer to a cycle boundary. Actual sleep stages vary.
Yes. Even a few extra minutes can shift your planned sleep schedule.
Alongside enough sleep, morning daylight, movement and avoiding naps that disrupt the next evening can help.
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.