1. Choose a time
Select your local alarm time. If it has already passed today, the clock automatically schedules tomorrow.
Free browser alarm with sound and snooze
Free Online Alarm Clock
An online alarm clock plays a browser sound at a local time you choose. Set a one-time alarm with a label, live countdown, selectable sound, 5-minute snooze, and full-screen clock—free and without signup.
Your local time
Loading your local time
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No alarm armed
Set a one-time alarm using the controls.
The next occurrence is selected automatically, including tomorrow when today's time has passed.
Alarm settings
Set an alarm
Choose a time, label, and sound to set your alarm.
Keep this tab open and your device awake.
Browser sleep, muted speakers, power saving, or a closed tab can stop the sound. Use a phone or dedicated alarm for critical reminders.
How to set your browser alarm
2. Test the sound
Pick a chime and test it once so your browser can enable audio and you can check the speaker volume.
3. Keep the tab awake
Arm the alarm, leave this page open, and prevent the device from sleeping until the alarm rings.
Make your online alarm more reliable
Test the selected sound, turn up the correct speakers, keep this tab open, connect the device to power, and disable automatic sleep for the session. Browser alarms are convenient for study blocks, chores, breaks, and routines, but they are not dependable enough for medication, travel, emergencies, or other critical reminders.
Online alarm clock FAQ
What is an online alarm clock?
An online alarm clock is a browser tool that plays a sound at a time you choose. This one also shows a live countdown, label, snooze control, and full-screen clock.
Will the alarm work if I close the browser tab?
No. Keep the tab open and the device awake with audible speakers. Browsers pause closed tabs and sleeping devices, so use a phone or dedicated clock for critical alarms.
Does this online alarm clock work on phones?
It works in modern mobile browsers while the page stays open and the phone remains awake. Mobile power-saving rules can silence background browser audio.
Why should I test the alarm sound first?
Browsers often block audio until you interact with the page. Testing the sound confirms that audio is allowed and your speaker volume is high enough.
Is my alarm saved or sent anywhere?
No. The alarm runs only in your current browser tab. FamilyGPT does not upload the time, label, or sound choice to a server.
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