Set Alarm for 5:45 AM
The alarm below is already set to 5:45 AM (5:45 a.m.). Press Set Alarm to arm it, and keep this tab open so it can ring.
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About this alarm
Quarter-to times are usually chosen for a reason, such as catching a specific bus or getting to a 6:30 class. If your alarm depends on a timetable, check it the night before: weekend and holiday schedules often change.
An early start, before most of the day begins. This is the slot people use for flights, gym sessions and quiet work before anyone else is up, and it is the one where a backup alarm on your phone is genuinely worth setting too.
Need a different time? Change the hour, minute or AM/PM above - you can set any minute of the day, and this page stays put. The online alarm clock works exactly the same way.
What time to go to bed for a 5:45 AM alarm
| Go to bed at | Sleep | 90-min units (approx.) |
|---|---|---|
| 8:30 PM | 9 hours | 6 |
| 10:00 PM | 7 hours 30 minutes | 5 |
| 11:30 PM | 6 hours | 4 |
Each bedtime is worked backward from the alarm time: 15 minutes to fall asleep, then whole 90-minute blocks. Actual sleep cycles and how much sleep you need vary from person to person, and waking up every 90 minutes doesn't guarantee an easier wake-up - treat these times as a starting point, not a guarantee.
5:45 AM in other formats
- 24-hour clock: 5:45 AM = 05:45
- Spoken: a quarter to six in the morning
- Bed at 10:00 PM: 7 hours 45 minutes until the alarm
- Bed at 11:00 PM: 6 hours 45 minutes until the alarm
- Bed at midnight: 5 hours 45 minutes until the alarm
Nearby alarm times
Questions about how it works? See the FAQ