About ClockWithUs

ClockWithUs is a small collection of time tools that respect your attention. We make an alarm clock, a timer, a stopwatch, a digital clock, a world clock, a timezone converter, and a holidays calendar — all free, all in your browser, no signup ever.

Why we built it

Most online clock sites are crammed with intrusive popups, autoplaying video ads, and aggressive tracking. We thought time-keeping deserved better. ClockWithUs loads fast, works offline once cached, and gets out of your way. The ads we do show are kept minimal and non-intrusive — they help keep the site free for everyone.

What's different

Clean SaaS-style design. White and blue palette, easy on the eyes, beautiful in both light and dark mode.

Keyboard shortcuts everywhere. Set alarms, start timers, lap a stopwatch — all without touching your mouse.

Real Web Audio sound synthesis. No bandwidth-heavy MP3 downloads. Alarms sound great and load instantly.

5000+ city world clock. Search any city worldwide. DST-aware. Built on the IANA timezone database.

Favorites and recently-used alarms. One-tap access to your common alarm times.

Pomodoro presets, lap times, fullscreen mode. Tools built around how you actually use them.

How we keep the site free

ClockWithUs is supported by advertising. We use Google AdSense and Adsterra to display ads, and Google Analytics to understand how visitors use the site so we can improve it. These third parties may use cookies and similar technologies; full details are in our privacy policy.

We commit to keeping ads non-intrusive: no popups that block the page, no autoplaying video with sound, no fake "close" buttons, no redirects from anywhere except links you intentionally click.

What we store on your device

Your theme preference, time format preference, recently-used alarms, and favorite alarm times are saved in your browser's local storage. This data stays on your device and is never sent to us. Clearing your browser data will remove it.

Contact

Found a bug, have a feature request, want to suggest a city for the world clock, or just want to say hi? Email contactus@clockwithus.com.