No upload, 100% local, no account

Online timer

Set a duration and start the timer, it beeps when time is up.

How Online timer works

Countdown timer lets you set a duration, hours, minutes and seconds, and counts down to zero, then plays an audible alert. It is the focused tool for a fixed time limit: cooking, a presentation practice run, a meeting slot, a sports interval. You set the duration; it counts down and notifies you.

This is distinct from the Stopwatch (which counts up from zero, measuring elapsed time and laps) and from the Pomodoro timer (which cycles automatically between fixed work and break intervals with its own rhythm). The countdown timer is the one-shot, any-duration, alarm-at-the-end tool, with no automatic cycling between intervals.

Frequently asked questions

Does the timer value I set get sent to Sunasty?

No. The countdown runs as a local interval in your browser tab. The duration you enter is never transmitted anywhere, it is just a number counting down in JavaScript on your own device.

How is this different from the Stopwatch?

The countdown timer counts down from a duration you set and alerts you when it reaches zero, you care about the remaining time. The Stopwatch counts up from zero, you care about elapsed time, and you can record laps. They answer opposite questions.

How is this different from the Pomodoro timer?

The Pomodoro timer follows the Pomodoro Technique: alternating fixed 25-minute work sessions and 5-minute breaks (with longer breaks every four sessions), cycling automatically. The countdown timer is a single, freely configurable countdown for any duration you choose, with no automatic cycling.

Does it work offline?

Yes, once the page has loaded. Because the processing happens on your device, you can disconnect from the network and the tool keeps working. This is the clearest proof that your data never leaves your machine.

Is it free? Do I need an account?

It is completely free and requires no sign-up. There are no watermarks, no daily limits and no tracking cookies needed to use the tool.