Online Alarm Clock
Set alarms that ring in your browser.
04:13:41
Sun, May 17, 2026
Next alarm
·
·
Your browser muted alarm sound. Tap the page to allow it.
Sound enabled. Your alarm will ring.
How to use the online alarm
Tap Set Alarm, pick a time, save. The preview tells you when it'll fire ("Tomorrow 7:30 AM, 8h 12m from now"). Dismiss or Snooze when it goes off. The preset buttons above are shortcuts for common wake hours.
Common questions
- Will the alarm ring if I switch to another tab?
- Yes. As long as the browser tab stays open, the alarm fires at the set time. Background tabs run slower than the active one, but the scheduled trigger still goes off.
- What happens if my laptop goes to sleep?
- The browser pauses with the device, so the alarm can't ring while the computer is asleep. Plug it in and turn off auto-lock before you go to bed.
- Why doesn't the sound play right away when I open the page?
- Modern browsers block audio until you interact with the page once. Click anywhere on the tab and the alarm will play normally.
- Can I set more than one alarm?
- Yes. Add as many as you need. Each runs on its own schedule.
- What time zone does the alarm use?
- Your device's local time. The alarm follows the device across time zones, not the zone you set it in.
- Will my alarms survive a refresh or a closed tab?
- Yes. Alarms save in the browser. If you sign in, they save to your account and follow you across devices.
Tips
Set the system volume before the alarm itself. Pin the tab so it can't be closed by accident. Deep sleepers: set two alarms a minute apart. The default snooze is 9 minutes. The number originates in the gear ratios of mechanical alarm clocks, and Apple chose to inherit it for the iPhone.
When this comes in handy
Phone's charging in the kitchen and the laptop's on the nightstand. Or you're napping, and don't want to fumble for the phone. Or a long video call where a wrap-up cue keeps you on time.