What Is Countdown Timer?
A Countdown Timer counts down from a duration you set to zero, then alerts you. It is the right tool for anything with a deadline: cooking, workouts, exams, presentations, meetings and breaks. Unlike a stopwatch, which measures how long something took, a countdown timer tells you how much time is left.
This online Countdown Timer lets you set hours, minutes and seconds up to 99 hours, plays a sound when the time is up, and lets you pause and resume without losing your place. The remaining time is calculated from your device clock rather than counting ticks, so it stays accurate even when the browser slows down background tabs. Everything runs in your browser, with nothing to install and nothing to sign up for.
How to Use Countdown Timer
- Enter the hours, minutes and seconds you want to count down from.
- Press Start. The display shows the remaining time and a progress bar fills as time passes.
- Press Pause to stop the countdown, and press Resume to continue from the same time.
- When the countdown reaches zero, a sound plays three times and a Time's up message appears.
- Press Reset to go back to the duration you set and start again.
- Keep the page open until the sound plays, even if you switch to another tab.
Key Features of Our Countdown Timer
- Set hours, minutes and seconds up to 99 hours
- Large, easy-to-read display with a progress bar
- Sound alert when the countdown finishes
- Pause and resume without losing the remaining time
- Remaining time shown in the browser tab title while running
- Accurate timing that keeps up even when the tab is in the background
- Works on phones, tablets and desktop computers
- No sign-up, no limits and no data sent to a server
Benefits of Using an Online Countdown Timer
A countdown timer takes the guesswork out of timing. Instead of checking the clock every minute, you set the duration once and get on with the task, knowing the alarm will tell you when time is up. That makes it easier to focus and harder to overrun.
Because this Countdown Timer runs in your browser, there is nothing to install and nothing to sign up for. Open the page, set the time and press Start.
Your privacy comes first. The Countdown Timer runs entirely in your web browser. Nothing you enter is sent to our servers, which keeps your data private and makes results appear instantly. See our Privacy Policy for details.
Common Use Cases for Countdown Timer
- Timing cooking, baking and brewing
- Counting down work sessions and study blocks
- Timing presentations, speeches and exams
- Running interval workouts and rest periods
- Counting down to breaks, meetings and events
- Timing board games, quizzes and challenges
- Keeping children on a visible timer for tasks and screen time
- Timing laundry, parking meters and other everyday waits
Tips for Getting the Best Results
- Set the timer before you start the task, not after, so the full duration counts.
- For cooking, set the timer for a minute less than the recipe says, then check the food.
- If you need the alarm to sound, keep your device volume on and the tab unmuted.
- Use short countdowns of 5 to 25 minutes for focused work, with a break in between.
- For repeated intervals, press Reset after the alarm and start again right away.
- Keep the page open until the sound plays. Closing the page stops the timer.
Countdown Timer FAQ
How do I set the countdown?
Enter hours, minutes and seconds in the three boxes, then press Start. The timer counts down from the total you set and shows the remaining time in large digits.
Will the timer ring when it finishes?
Yes. When the countdown reaches zero the timer plays a sound three times and shows a Time's up message. Press Start at least once first, because browsers only allow audio after you interact with the page.
Will the timer keep running if I switch tabs?
Yes. The timer calculates the remaining time from the clock rather than counting ticks, so it stays accurate even when your browser slows down background tabs. Keep the page open until the sound plays.
Can I pause the countdown?
Yes. Press Pause to stop the countdown and press Resume to continue from the same remaining time.
What is the longest countdown I can set?
Up to 99 hours, 59 minutes and 59 seconds. Minutes and seconds are capped at 59 each.
Does the countdown timer work offline?
Yes. Once the page has loaded, the timer keeps working without an internet connection.