Counting forward from 1:00 AM
If you get into bed at 1:00 AM and fall asleep about 15 minutes later, your first sleep cycle starts at 1:15 AM. With cycles of roughly 90 minutes, they end at:
- 7:15 AM (07:15) after four cycles, or 6 hours asleep;
- 8:45 AM (08:45) after five cycles, or 7.5 hours;
- 10:15 AM (10:15) after six cycles, or 9 hours.
Because the bedtime is already after midnight, all three wake-up times are on the same calendar day.
Which wake-up time fits a 1 AM bedtime?
8:45 AM gives 7.5 hours of sleep, which meets the recommendation that adults sleep at least 7 hours. It works on a weekend or if your day starts at 10:00 AM.
10:15 AM gives 9 hours, useful on a day off or after a run of short nights.
7:15 AM gives only 6 hours. It will get you to work, but it is not enough to rely on night after night.
If you take more or less than 15 minutes to fall asleep
The times above allow 15 minutes to fall asleep. After a late evening on screens or out with friends, it often takes longer. Use the row that matches you; the highlighted row matches the answer at the top of this page.
| Fall asleep in | 9 h | 7.5 h | 6 h |
|---|---|---|---|
| 5 min | 10:05 AM10:05 | 8:35 AM08:35 | 7:05 AM07:05 |
| 10 min | 10:10 AM10:10 | 8:40 AM08:40 | 7:10 AM07:10 |
| 15 min | 10:15 AM10:15 | 8:45 AM08:45 | 7:15 AM07:15 |
| 20 min | 10:20 AM10:20 | 8:50 AM08:50 | 7:20 AM07:20 |
| 30 min | 10:30 AM10:30 | 9:00 AM09:00 | 7:30 AM07:30 |
Staying up late for “me time”
Many people stay up later than they mean to because the late evening is the only time that feels like their own. Scrolling, streaming or gaming past midnight is common, even when you know the alarm is set for 7:00 AM.
If this sounds familiar, try building some free time into your evening earlier, setting a “devices off” reminder at 11:30 PM, and keeping your phone across the room at night. Small changes like these often move bedtime earlier without feeling like a sacrifice.
If you have a 7 AM alarm
With a 7:00 AM alarm, a 1:00 AM bedtime gives about 5 hours 45 minutes. With 7:30 AM, it gives about 6 hours 15 minutes. Both are below the adult recommendation. For an occasional late night, go to sleep straight away rather than staying up for a later cycle, and plan an earlier night afterwards. For a better regular target, see bedtime for a 7 AM wake-up.
More answers
- Wake-up time if you sleep at 12:30 AMNearby answer
- Wake-up time if you sleep at 1:30 AMNearby answer
- Wake-up time if you sleep at 12 AMNearby answer
- Wake-up time if you sleep at 2 AMNearby answer
- Bedtime for a 4 AM wake-upRelated answer
- Bedtime for a 4:15 AM wake-upRelated answer
- Bedtime for a 4:30 AM wake-upRelated answer
- Bedtime for a 4:45 AM wake-upRelated answer
Frequently asked questions
Is 1 AM too late to go to bed?
It depends on your alarm. Allowing 15 minutes to fall asleep, a 1:00 AM bedtime gives 7.5 hours with an 8:45 AM (08:45) alarm, but only about 5 hours 45 minutes with a 7:00 AM alarm.
How much sleep do I get from 1 AM to 8 AM?
About 6 hours 45 minutes, if you fall asleep by 1:15 AM. That is a little under the adult minimum of 7 hours, and 8:00 AM falls partway through a cycle.
How can I stop going to bed at 1 AM?
Keep a fixed wake-up time, get morning daylight, and move bedtime earlier by about 15 minutes every few nights. Putting your phone away earlier in the evening is often the single biggest help.
Related calculators
Wake-up time calculator
Going to bed now or at a set time? Find wake-up times that land at the end of a cycle.
Bedtime calculator
Enter any wake-up time to see bedtimes that let you wake between sleep cycles.
Nap calculator
Plan a 10-, 20- or 90-minute nap and see when to set your alarm.
Sleep debt calculator
Add up the last seven nights and see how far you are from your sleep target.
Sources
- National Institute of Neurological Disorders and Stroke. Brain Basics: Understanding Sleep.
- National Heart, Lung, and Blood Institute. How Sleep Works.
- Watson NF, et al. Recommended Amount of Sleep for a Healthy Adult: A Joint Consensus Statement of the American Academy of Sleep Medicine and Sleep Research Society. Journal of Clinical Sleep Medicine, 2015;11(6):591–592. doi:10.5664/jcsm.4758.
- Centers for Disease Control and Prevention. About Sleep.
When to seek help
Talk to a doctor if you:
- regularly take longer than 30 minutes to fall asleep, or wake in the night and can’t get back to sleep;
- snore loudly, or someone notices you gasp or stop breathing while asleep;
- feel very sleepy during the day, especially while driving or working, despite enough time in bed.