Online Alarm Clock — Full Screen, Loud Alarm
Set the alarm time, leave the tab open, and ClockAura will play an alarm at the moment you picked. Perfect for naps, reminders, and timed tasks.
About the online alarm clock
An online alarm clock rings at a specific time of day (unlike a timer, which counts down a duration). Set the time, leave the tab open, and ClockAura plays a loud alarm at that exact moment — even while you use other tools on the site.
Use it for a specific time of day — when a meeting starts, the laundry is done, or it's time to leave for school pickup. Set as many alarms as you like, label each, and switch them off without deleting them. Alarms ring while you use other tools on the site: set one for 3:30 pm, open the Pomodoro Timer, and a banner appears at 3:30 on whatever page you are on.
Will the alarm still ring if…
| Situation | Alarm rings? |
|---|---|
| You switch to another browser tab | Yes |
| You use another ClockAura tool | Yes — a banner pops up |
| The browser tab is muted | No — unmute the tab first |
| You close the tab or browser | No — keep the tab open |
| The computer goes to sleep | Not until it wakes up |
When to use the alarm clock
- Reminders to take medication at the same time every day.
- Knowing when to start cooking dinner without watching the clock.
- Leaving the house on time for the school run or a doctor appointment.
- Reminding yourself to drink water, take a walk or stretch every hour.
- Backup alarm for naps and meditation.
- Catching the start of a livestream, sports match or webinar on time.
How to set an alarm
- Pick a time in the time field (it uses your device's 12 or 24 hour format).
- Add an optional label so you remember what the alarm is for ('take meds', 'pick up Sam').
- Press Add alarm. The alarm appears in the list below with an on/off switch.
- Use other tools freely — at alarm time an orange banner with Stop and Snooze 5 appears on any page.
- Toggle an alarm off to keep it for next time without deleting it.
Tips for using the alarm clock
- Allow notifications so you also get a desktop popup when the tab is hidden behind another window.
- Test your chosen sound once; in a loud room use Long beep or Bell.
- For naps, set two alarms five minutes apart. The first is a soft warning, the second the firm wake-up.
- Alarms are stored per browser, so set them on the device you'll have nearby.
- Snooze 5 is fine for one repeat; for waking up, set an alarm at the time you actually need.
Alarm clock FAQ
Will the alarm fire if my computer is asleep?
No. A browser tab cannot wake a sleeping computer; the alarm fires once it wakes. For wake-ups, use your phone's alarm app.
Can I set more than one alarm?
Yes, with no limit; each has its own label, time and on/off switch.
Do my alarms persist if I close the tab?
Alarms are saved in your browser and return when you reopen the tab, but they cannot ring while it is closed — keep the tab open or install the app.
Why does my alarm need notification permission?
It doesn't; permission just adds a system popup for when the tab is hidden behind another window.
Can I get a recurring alarm — every day at the same time?
Not yet — alarms are one-shot. Toggle one back on after it fires to repeat tomorrow.
Can an alarm online wake me up?
Yes, as long as the tab stays open and your volume is up. Set the alarm online, leave the page open and it will sound to wake up at the set time. For a nap, keep the device plugged in so it does not go to sleep.