Countdown Timer – Free Online Timer with Alarm
A free countdown timer that counts down from any duration and plays an alarm when time runs out — perfect for cooking, study sessions, and workouts.
Hours
Minutes
Seconds
00:00:00
Results
What is this tool?
A countdown timer is a reverse clock that counts down from a duration you set to zero, then triggers an audio alarm to alert you. Unlike a stopwatch that counts up, a countdown timer is useful when you need to work within a fixed window — finishing a recipe in 20 minutes, capping a study block at 45 minutes, or managing exam time. It runs entirely in your browser with no sign-up required, and the alarm plays even if the tab is in the background.
How to use this tool?
1. Enter the duration: set hours, minutes, and/or seconds using the input fields.
2. Click "Start" — the timer immediately begins counting down.
3. Click "Pause" at any point to freeze the countdown while keeping the remaining time intact.
4. Click "Resume" (or "Start" again) to continue from where you paused.
5. Click "Reset" to return the timer to your originally entered duration so you can run the same countdown again.
6. When the countdown reaches zero, an audio alarm sounds automatically — click "Stop Alarm" to silence it.