Set a countdown for minutes, hours, or seconds and receive an alert when the time is up.
Choose a preset duration instead of entering the time manually.
A countdown timer measures a fixed amount of time backwards until it reaches zero. Unlike a clock that displays the current time, a countdown timer answers the question, “How much time is left?”
Countdown timers are useful whenever an activity needs to be completed within a defined period, such as studying, exercising, cooking, presentations, meetings, quizzes, breaks, or focused work sessions.
Set a fixed study period and work until the timer reaches zero. This can be useful for focused study sessions and timed revision.
Use short countdowns for exercise intervals, rest periods, stretching, warm-ups, or other timed activities.
Set a timer for cooking, baking, boiling, resting, or other kitchen tasks where timing matters.
Set a defined work period for focused tasks, meetings, presentations, breaks, or time-boxed activities.
A countdown can help students or instructors keep track of a defined testing or practice period.
Set a short countdown for rest periods, breathing exercises, meditation, or scheduled breaks.
The timer converts the hours, minutes, and seconds you enter into a total number of seconds. It then counts backwards until the remaining time reaches zero.
The display is formatted as:
For example:
The countdown uses elapsed time rather than relying solely on the browser's interval frequency, which helps keep the displayed remaining time more accurate when the browser temporarily delays JavaScript execution.
Starts the countdown using the entered duration. If the timer was previously paused, Start continues from the remaining time.
Temporarily stops the countdown without losing the remaining time. You can press Start again to continue.
Stops the timer and restores the countdown to the values currently entered in the hour, minute, and second fields.
The countdown duration and timer settings are handled locally by your browser. This tool does not need to upload your timer information to a server.
Yes. Enter the required number of seconds and leave the hours and minutes at zero.
Yes. You can enter up to 99 hours in the hours field. The display will show the duration in HH:MM:SS format.
Yes. Click Pause and then Start when you are ready to continue. The remaining time is preserved.
Reset stops the timer and returns it to the duration currently entered in the input fields.
Yes, if the sound option is enabled and your browser permits audio playback. The timer plays a short alarm when the countdown reaches zero.
If browser notifications are supported and permission has been granted, the timer can display a notification when it finishes.
Yes. When you are not typing in an input field, pressing the Spacebar starts the timer or pauses it if it is already running.
Once the page and its required resources are available in your browser, the countdown calculation itself does not require a server connection. Browser notification and audio behaviour can still depend on browser and device permissions.
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