Multiple alarms
Create several alarms on the same page. Each permanent item has its own time, title, sound, and enabled state, and repeats daily.
No alarms enabled.Alarm sound troubleshooting (opens in a new tab)
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Online Alarm Clock
Create one or more browser-based alarms with a title, time, sound, and snooze action. Alarm settings are kept locally in the browser, and no account or download is required.
Multiple alarms27 soundsDaily alarms1, 5, or 10-minute snoozeResponsive controls
Choose a preset alarm time
27 notification sounds
Browse and preview the sound library before assigning a notification to an alarm.
Snooze controls
Snooze an active alarm for exactly 1, 5, or 10 minutes without changing the original item.
Local settings
Alarm settings are stored in the browser used to create them and can be changed or disabled there.
Keep the alarm page available
The browser tab must remain open for an in-page alarm to ring. Fullscreen can request the Screen Wake Lock API when the browser and device support it, but the browser or device may release Wake Lock. Audio playback and browser notifications may also require permission and can be limited by device settings.
How to set an alarm
- 1Choose a time or add a custom alarm.
- 2Add a title and choose a sound.
- 3Allow audio or notifications if prompted.
- 4Keep this tab open while the alarm is needed.
More time tools
Frequently Asked Questions About Online Alarm Clock
How many alarms can I set at once?
You can add multiple alarms, each with a title, time, sound, and enabled state. Duplicate-time handling and a queue are provided by the alarm interface.
Will an alarm ring if I close the browser tab?
The browser tab must remain open for the in-page alarm to ring. Alarm settings are saved locally and can be restored when you return. Browser notifications and audio still depend on permission and device settings.
Can I customize alarm sounds?
Yes. Choose from the 27 sounds in the checked-in library and preview a sound before assigning it to an alarm. Audio playback may be limited by browser permission or device settings.
How does snooze work?
Snooze creates a temporary alarm while preserving the original alarm. The available choices are exactly 1, 5, or 10 minutes.
Does the alarm support mobile devices?
The alarm page has responsive, touch-friendly controls. Audio, notification permission, and fullscreen or Wake Lock support vary by browser and device.