Clock
Local time, date, seconds, 12/24 hour format and fullscreen display.
12:34:56
Open Clock → Your local time now:
Simple online time tools, beautifully designed.
Monday, July 20, 2026
Accurate clock, timer, alarm and stopwatch tools that work directly in your browser.
Time tools
Everything you need to keep time.
Choose a tool and start immediately. No account, setup or installation.
Timer
Accurate countdowns with quick presets, labels, sound and recovery.
24:37
Open Timer → Alarm
A browser alarm with test sound, volume control, stop and snooze.
07:30
Open Alarm → Stopwatch
Precision elapsed time with laps, splits and fastest-lap comparisons.
00:02:48.61
Open Stopwatch → Clear, distraction-free displays.
Common timers in one click.
No installation required.
No signup or cloud account.
Designed for focus.
Built for everyone.
Use 123 O'CLOCK for studying, working, exercising, cooking, presenting, or any moment that needs a clear beginning and end.
Good to know
Frequently asked questions
Is 123 O'CLOCK free to use?
Yes. Every clock, timer, alarm and stopwatch tool is free and requires no account.
Do the tools work if I switch tabs?
Timers and stopwatches calculate from timestamps, so they stay accurate when a background tab is throttled.
Will an alarm work after I close the browser?
No. Browser alarms need the page to remain open, and device sleep may prevent a sound.
Where are my settings saved?
Preferences and active tool state are stored locally in your browser on this device.
Ready when you are