Set the alarm clock for 9:40 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 9:38 am Alarm clock for 9:39 am Alarm clock for 9:41 am Alarm clock for 9:42 am

Going to bed for a 9:40 am alarm

Asleep by 12:25 am — 6 full sleep cycles, about 9 hours
Asleep by 1:55 am — 5 full sleep cycles, about 7 hours
Asleep by 3:25 am — 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.

9:40 am across the country

Sydney	9:40 am
Brisbane	9:40 am
Adelaide	9:10 am
Perth	7:40 am
Darwin	9:10 am

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

How to use the online alarm clock

Uni lectures, gym sessions before work, or just a second alarm because the first one never works: 9:40 am is a popular time to want a backup. This rings from your browser at 9:40 am. No app store, no sign-up, just a tab that needs to stay open until it fires.

Start by selecting a tone from the dropdown, then hit Start to lock it in. From that point the page does the counting, and it'll ring once the time is reached, but only if the tab is still open somewhere on your device. Closing it, or the browser entirely, cancels the alarm.

It's free to use, doesn't need an account, and works the same in any modern browser, but it's honestly not meant to replace your phone for anything you can't afford to sleep through. Keep the tab open and the device awake, and it'll ring reliably at the time you set. On a 24-hour clock 9:40 am is written 09:40, and spoken aloud it's twenty to ten in the morning. Written the Australian way that's 9.40 am, and typed in a hurry it's often 9:40am. Set an alarm for 9:40 am, set the alarm to 9:40 am, set my alarm for 9:40 am — all of it lands on this page and does the same thing.

Common questions

Why use a browser alarm instead of my phone's built-in one?

Mainly for reliability against silent mode, do-not-disturb, or a phone left charging out of earshot. It's a useful backup or a desk-based alternative, though it depends on this tab staying open rather than running in the background of your phone.

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.