What Time Should I Go to Bed to Wake Up at 9:00 AM?
To wake up feeling refreshed at 9:00 AM, the best times to fall asleep are 11:46 PM or 1:16 AM. Those bedtimes let you complete 5 to 6 full 90-minute sleep cycles and wake at the end of a cycle — rather than in the middle of deep sleep, which is what leaves you groggy. The table below counts back from your 9:00 AM alarm and allows about 14 minutes to fall asleep. Use the calculator to adjust for your age or how quickly you drift off.
| Bedtime | Sleep | Cycles | Rating |
|---|---|---|---|
| 11:46 PM | 9 hours | 6 | Ideal |
| 1:16 AM | 7.5 hours | 5 | Ideal |
| 2:46 AM | 6 hours | 4 | OK |
| 4:16 AM | 4.5 hours | 3 | Short |
Adjust for your age or fall-asleep time
Go to bed at one of these times:
Times marked ideal land 5–6 full sleep cycles — the sweet spot for most adults. A ★ marks the best fit for the selected age.
How much sleep do you need?
| Age group | Recommended sleep |
|---|---|
| Teen (13–17) | 8–10 hours |
| Adult (18–64) | 7–9 hours |
| Older adult (65+) | 7–8 hours |
Frequently asked questions
What time should I go to bed to wake up at 9:00 AM?
For a full night's rest, go to bed around 11:46 PM or 1:16 AM. That gives you five to six complete 90-minute sleep cycles before your 9:00 AM alarm, plus roughly 14 minutes to fall asleep.
How many hours of sleep is that?
A 11:46 PM bedtime gives you about 9 hours of sleep; 1:16 AM gives about 7.5 hours. Most adults feel best with 7 to 9 hours a night.
Why do these times not add up to a round number of hours?
Sleep runs in roughly 90-minute cycles. Waking at the end of a cycle feels more refreshing than waking in the middle of one, so the recommended bedtimes are spaced 90 minutes apart and include time to fall asleep — which rarely lands on a whole hour.