Free tool

Online alarm clock, in a browser tab.

Pick a time, a label and a sound, and press Set. The big clock keeps time, your alarms count down below it, and when one goes off the sound plays, the alarm fills the page and the tab title flashes, with Snooze for 5 or 10 minutes. Set several alarms, or a quick one in 5, 10 or 30 minutes. It works only while this tab stays open and your computer is awake.

00:00

    Keep this tab open, the sound on and the computer awake. A sleeping computer cannot ring.

    Alarms are kept in this browser. Nothing is sent anywhere, and the sounds are made in the page.

    Simple and honest

    Rings while the tab is open.

    01 / Set

    Any time, any label

    Pick a time today or tomorrow, or a quick alarm in a few minutes. Set as many as you like.

    02 / Ring

    Sound, screen, title

    The sound repeats and grows louder, the page shows the alarm, and the tab title flashes.

    03 / Limits

    Keep it awake

    Browsers cannot wake a sleeping computer or ring from a closed tab. For that, use your phone's alarm.

    Questions

    Good to know.

    How do I set an alarm online?

    Pick a time, choose a sound and press Set the alarm. Keep the tab open.

    Will it ring if I close the tab or my computer sleeps?

    No. The page has to be open and the computer awake.

    Can I set more than one alarm?

    Yes. Each one is listed with how long is left.

    Can I snooze?

    Yes, for 5 or 10 minutes.

    Why test the sound first?

    Browsers only allow sound after you click on the page. Testing also checks your volume.