Timers
countdown · count up · presets
Alarm Clocks
up to 25 alarms · use web sounds
Counters
tally · people · production · levels
Sound Tip . . .
To ensure alarms play, keep your timer or alarm clock in a browser window that is not minimized and not in a background tab. Why do browsers restrict sounds?
Free · works instantly in your browser
Timing tools — Done right
Timers, alarm clocks, and counters — fast, customizable, yours to save and share.
Built from 20 years of experience creating online timers and timing tools, Timer123 provides fast, accurate tools for timing, alarm clocks, counting, and everyday tasks — all designed to work instantly in your browser, nothing to install.
Use a tool in seconds — or customize sounds, layouts, alarms, colors, and
behavior to fit how
Fast • Customizable • Saved Setups • Sharable • Shortcuts • 50+ Sounds
Help, Tips & Tricks
Learn how to customize Timer123 tools, work faster, and get more from our timers, alarm clocks, and
How We're Different
Timer123 goes beyond basic online timers and alarm clocks by giving you more control — without unnecessary complexity.
- Built for fast use or deep customization
- 50 built-in sounds plus support for external audio
- Save and reuse setups anytime
- Share exact configurations with others
- Keyboard shortcuts for faster control
- Works instantly in your browser — desktop or mobile
- Supports real-world use cases from classrooms to factory floors
A portion of proceeds supports Western Lands Preservation
Customize – How So?
All our timers, alarm clocks, and counters can be customized. For example our alarm clocks let you set 40+ different visual and functional aspects through the Basic and Advanced settings.
Once set up, you can then save your configuration in a link for later use, or to share with others. Our Steampunk Alarm Clock is an example of what
Standard Calculator . . .
A distraction-free calculator for everyday math — fast, clear, and easy to use.
Saves your last 100 calculations, so you can jump back to an earlier point, and continue from there. Plus full keyboard support and a smart equals key : - )
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