Set the alarm clock for 3:23 am

Leave this tab open — the alarm only rings while the tab stays open.

The alarm goes off in: ::

You can also try the other alarm clocks

Alarm clock for 3:21 am Alarm clock for 3:22 am Alarm clock for 3:24 am Alarm clock for 3:25 am

Going to bed for a 3:23 am alarm

Asleep by 6:08 pm — 6 full sleep cycles, about 9 hours
Asleep by 7:38 pm — 5 full sleep cycles, about 7 hours
Asleep by 9:08 pm — 4 full sleep cycles, about 6 hours

A sleep cycle runs about 90 minutes, and most people take around 15 minutes to drop off. Waking at the end of a cycle feels easier than waking in the middle of one.

3:23 am across the country

Sydney	3:23 am
Brisbane	3:23 am
Adelaide	2:53 am
Perth	1:23 am
Darwin	2:53 am

Times are worked out live in your browser, so daylight saving is already accounted for.

How to use the online alarm clock

Newborns don't care what time it is, and neither does an early shift roster. If 3:23 am is when you need to be up and moving, this page will ring at exactly 3:23 am through your browser, giving parents and shift workers one less thing to double-check before they finally shut their eyes.

Using it is simple: pick a ringtone from the list, press Start, and leave this tab open in your browser. The alarm runs entirely on this page, so closing the browser will stop it from going off. Come back a minute early if you're not sure you trust it yet.

The advantage of a browser alarm is volume and reliability at a desk: laptop speakers are often louder and easier to hear across a room than a phone left in a bag. The catch is that it depends entirely on the tab staying open; if the browser closes or the laptop sleeps, the alarm won't fire. On a 24-hour clock 3:23 am is written 03:23, and spoken aloud it's twenty-three minutes past three at night. Timetables and rosters may show it as 03:23, and handwritten notes as 3.23 am. Whether you would say set alarm for 3:23 am or put an alarm on for 3:23 am, the steps are the same: pick a sound, press Start, leave the tab open.

Common questions

Is there a cost to use this?

No, it's free, with no sign-up and no limit on how many times you set it. It just needs the tab left open until the time you've chosen arrives.

Will the alarm still ring if I close the browser tab?

No. The alarm only runs while this tab stays open — closing it, or closing the browser entirely, stops the countdown before it can ring. Keep the tab open in the background if you need it to go off later.

Does the alarm work if my laptop goes to sleep?

Not reliably. If the device sleeps or the screen locks, the browser tab pauses along with it, so the alarm may not fire on time or at all. Adjust your power settings if you're relying on this over a longer stretch.

Do I need to create an account or download anything?

No, there's nothing to sign up for and nothing to install. Pick a time and a sound, press Start, and it runs entirely in this browser tab.