Set one-time or daily browser alarms with optional labels and a five-minute snooze.
Online Alarm Clock
Dates and alarms use your device time zone. Keep this page open.
Settings
Sessions and preferences stay in this browser. Keep the page open for sound; sleeping or closed devices cannot reliably sound alarms. Your device clock determines the time.
How to set an alarm
Choose a local time, add an optional label and select Add alarm. A time that has already passed is scheduled for tomorrow. You can turn individual alarms off, remove them or use the five-minute snooze when an alarm rings.
Keep the alarm page open
Browser sound requires interaction. Test the sound and keep this page open. It cannot reliably wake a sleeping device or ring after the browser is closed. Alarms more than five minutes late are treated as missed.