Set the alarm clock for 6:42 am

 

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

The alarm goes off in: ::
 
 

Going to bed for a 6:42 am alarm

  • Asleep by 9:27 pm — 6 full sleep cycles, about 9 hours
  • Asleep by 10:57 pm — 5 full sleep cycles, about 7 hours
  • Asleep by 12:27 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.

6:42 am across the country

Sydney6:42 am
Brisbane6:42 am
Adelaide6:12 am
Perth4:42 am
Darwin6:12 am

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

How to use the online alarm clock

Mornings between six and eleven are when most households actually need an alarm, not the phone buried in a bag by the door. Set this one for 6:42 am, pick something loud enough to cut through breakfast noise, and it'll ring right on 6:42 am through your laptop or desktop speakers.

Select a sound, hit Start, and that's the whole setup. The countdown runs inside this browser tab rather than on your device's operating system, so it needs to remain open, on a phone or laptop, until the alarm actually goes off.

A browser alarm like this one is handy when your phone's on silent, charging in another room, or you just don't want to unlock it and get pulled into notifications. The trade-off is honesty: it only rings while this tab stays open, so it's not a replacement for your phone alarm on a trip where the laptop lid might close. On a 24-hour clock 6:42 am is written 06:42, and spoken aloud it's eighteen minutes to seven in the morning. Timetables and rosters may show it as 06:42, and handwritten notes as 6.42 am. Setting the alarm to 6:42 am tomorrow morning works the same way: if the time has gone for today, the count runs through to it.

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.