Alarm for 3:00 AM
Set a free online alarm for 3:00 AM. This page opens with the alarm time already filled in as 3:00 AM — just press Set alarm and keep the tab open. It rings with a built-in sound at 3:00 AM. No download, no signup.
Common uses
- A wake-up alarm
- A reminder before an appointment
- A nap or break alarm
- A medication or call reminder
How to set an alarm for 3:00 AM
- The time is already filled in as 3:00 AM.
- Add an optional label such as "Wake up" or "Meeting".
- Press Set alarm. It appears in the list below.
- Leave this tab open. The alarm rings at 3:00 AM — press Stop to silence it.
What time is 3:00 AM?
3:00 AM is written 03:00 in 24-hour (military) time. It falls 3 hours after midnight — about 12% of the way through the day. From 3:00 AM it is 9 hours until noon.
Why people set a 3:00 AM alarm
- A checkpoint alarm for late-night study or gaming so the night doesn't disappear.
- Catching a live event in another time zone, from market opens to overseas sport.
- Getting up for a very early flight when check-in opens long before sunrise.
- Submitting work before a deadline in another region that lands at 3:00 AM your time.
FAQ
Does the alarm ring if I close the tab?
No. The alarm runs in your browser, so the tab must stay open. You can minimize the window, but don't close the tab.
Are my alarms saved?
Yes, they're stored locally in your browser (localStorage). They are not sent to any server.
Why is there no sound at first?
Browsers block audio until you interact with the page. Press a button once and the alarm sound will work.
What is 3:00 AM in 24-hour time?
3:00 AM is 03:00 in 24-hour notation.
How far through the day is 3:00 AM?
3:00 AM is 3 hours after midnight, which is about 12% of a 24-hour day.
Will the 3:00 AM alarm ring if my device goes to sleep?
Only if the tab is open and the device is awake. For overnight alarms, plug the device in and disable auto-sleep, or keep a phone alarm as backup.