Set Alarm for 4:45 AM
A free online alarm clock preset to 4:45 AM. Press Start, leave this tab open, and it will ring at 4:45 AM sharp.
Keep this tab open. For alarms that work with your phone locked, get AVA.
Waking up at 4:45 AM
A 4:45 AM alarm belongs to the earliest risers — bakers, market traders, early-shift crews and anyone chasing a flight before the airport crowds arrive. At this hour the trick is not willpower, it is planning the night before.
Work the math backwards: to wake at 4:45 AM with five complete 90-minute sleep cycles behind you, be asleep by 9:15 PM. If you can manage a full nine hours, lights out by 7:45 PM. Waking at the end of a cycle feels dramatically easier than being pulled out of deep sleep in the middle of one.
Lay everything out the evening before — clothes, keys, coffee ready to brew — so the first ten minutes run on autopilot. Then flood the room with light as soon as the alarm rings; before dawn, a bright lamp does the sun’s job of switching your body into day mode.
FAQ
- How do I set an alarm for 4:45 AM?
- Press Start above — the page counts down to the next 4:45 AM and plays a loud beep through your browser. Keep this tab open and your volume up. No download or signup needed.
- What time should I go to bed to wake up at 4:45 AM?
- To get 7.5 hours of sleep (five full 90-minute cycles), be asleep by 9:15 PM. For a full nine hours, aim for 7:45 PM. Add about 15 minutes for actually falling asleep.
- Will the alarm ring if my screen is off or the tab is closed?
- No — a browser alarm needs this tab open and the device awake. For alarms that ring reliably even over the lock screen, use the AVA app.