Set Alarm for 4:15 AM
A free online alarm clock preset to 4:15 AM. Press Start, leave this tab open, and it will ring at 4:15 AM sharp.
Keep this tab open. For alarms that work with your phone locked, get AVA.
Waking up at 4:15 AM
A 4:15 AM start is a serious commitment — the kind that comes with an early shift, a long drive, or a training plan that only fits before the day begins. Treated well, it can become the calmest part of your day.
The bedtime math is unforgiving this early: asleep by 8:45 PM buys you five full 90-minute cycles, while 7:15 PM gives you the whole nine hours. Guard that window — a single late evening shows up loudly at 4:15 AM.
Keep the alarm across the room so standing up is part of switching it off, and use bright light plus a splash of cold water to finish the job. Caffeine works better after 20–30 minutes awake, once your natural cortisol pulse has done its part.
FAQ
- How do I set an alarm for 4:15 AM?
- Press Start above — the page counts down to the next 4:15 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 4:15 AM?
- To get 7.5 hours of sleep (five full 90-minute cycles), be asleep by 8:45 PM. For a full nine hours, aim for 7:15 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.