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

Time Tools

A practical browser toolkit for everyday timing

s-clock.com provides focused time utilities that run in your browser: an online alarm clock, a countdown timer, a stopwatch with laps, a world clock, and holiday countdowns. The tools are designed for work sessions, classrooms, cooking, meetings, travel planning, and quick time-zone checks.

Local-first utilities

Settings, stopwatch laps, and saved world clocks are stored on your device with localStorage. No account is required.

Clear timing behavior

Alarms and timers depend on the browser tab staying open. Test Sound helps unlock browser audio before you rely on a reminder.

Shareable configurations

Each tool can generate a link or iframe snippet so a configured timer, alarm label, or countdown can be reused.

Frequently asked questions

Why does Local Time show my device time zone?

Local Time uses your browser's time zone setting. A VPN or remote IP address does not change the device time zone reported by the browser.

Will alarms work if I close the browser?

No. Browser-based alarms and timers run only while the tab remains open and the device is awake.

Does s-clock.com collect personal account data?

No sign-in is required. The site uses local browser storage for preferences and may use advertising cookies if Google AdSense is enabled.

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.