Precision Time

Online Alarm Clock

Local Time

Monday, May 11, 2026

Local timezone

Synchronized in this browser

Alarm

Set a browser-based alarm for the next matching time.

Idle

Alarms run only while this browser tab stays open and awake.

Timer

Run countdowns with precise presets and end behavior.

Ready
00:05:00

Stopwatch

Track elapsed time and preserve lap records locally.

Idle
00:00:00.000

No laps yet.

World Clock

Add, pin, edit, sort, and compare time zones.

0 cities

Holiday Countdowns

Upcoming holidays for the United States, United Kingdom, Australia, and Canada.

Next

Browser timing notice

sClock uses this browser tab for alarms and timers. Keep the tab open, turn up your volume, and use Test Sound once so the browser allows audio playback.