Sleep Cycle Calculator
Calculate optimal bedtimes or wake times
I want to calculate
I want to wake up at
Time to fall asleep: 14 min
Average time to fall asleep is 10-20 minutes
Result
Optimal sleep times
No Result Yet
Enter your preferred time on the left and click Calculate to see optimal sleep times.
How to Use
- Choose what to calculate :- Select "When to go to bed" or "When to wake up"
- Enter your time :- Input the time you plan to wake up or go to bed
- Set fall asleep time :- Adjust the slider based on how long it takes you to fall asleep
- Click Calculate :- View optimal times based on 4-6 complete sleep cycles (90 min each)
Note: The middle option (5 cycles / ~7.5 hours) is generally recommended for most adults. Waking at the end of a cycle helps you feel more refreshed.