Online Countdown Timer With Alarm

Set a time and count down with a sound when it ends. Use it for cooking, workouts, presentations, study sessions or any task that needs a timer.

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How it works

Enter hours, minutes and seconds, or choose a preset, then press Start. The timer checks your device clock several times a second, so it stays accurate. When it reaches zero it shows “Time is up!” and plays a short tone. Pause and Reset let you stop and start again.

Example

Press the 10 min preset, then Start. Ten minutes later you hear a tone.

Frequently asked questions

Does the timer keep running if I switch tabs?

Yes, it keeps time using your clock. Some browsers may delay the sound in background tabs.

Will I hear a sound?

A short tone plays when the time is up. Make sure your device volume is on.

Is there a maximum time?

You can enter any number of hours, minutes and seconds.

More free tools: Pomodoro timer · Stopwatch · All free tools

Timers use your device clock. Do not rely on them for safety-critical timing.