Alarm clock
Set a local alarm, test its sound and see when it will ring.
Your inputs
Your result
Ready
How it works
- Choose a local time and arm the alarm. A time already passed is scheduled for tomorrow. Test the sound before relying on it.
Assumptions and limitations
Time comes from your device, not a synchronized time server. Keep this page open and the device awake for alarms and timers. Background tabs may delay sound. Nothing is saved after leaving this page.
Sources
- MDN — browser timers and background throttling Sources reviewed: 2026-10-24
