How do I set a countdown timer?

Enter the number of hours, minutes, and seconds you want to count down, then click Start. Alternatively, switch to Event Countdown mode to pick a specific date and time to count down to.

Can I share a countdown timer with others?

Yes. The timer state is encoded in the URL. Copy the link from your browser address bar and share it - anyone who opens the link will see the same countdown.

Does the countdown timer make a sound when it finishes?

Yes. An audio alert plays when the countdown reaches zero. The sound is generated in-browser using the Web Audio API, so no files need to download.

Home/Countdown Timer

Countdown Timer

Create a countdown timer for your events, deadlines, and special moments

Set Timer Duration

Timer Label (Optional)

Hours

Minutes

Seconds

Countdown to Event

Event Name

Date

Time

Ready

00:05:00

Progress

Share Countdown

Space Start/Pause · R Reset · F Fullscreen

Related Tools

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Free Online Countdown Timer

The ClockTools Countdown Timer lets you count down from any custom duration or count down to a specific future date and time. It runs entirely in your browser with no installation, no sign-up, and no server dependency. Use it for exam time limits, cooking, presentations, product launches, fitness intervals, or any situation where you need a visible, reliable countdown.

Two Countdown Modes

In Custom Duration mode, enter hours, minutes, and seconds to start an immediate countdown. In Event Countdown mode, select a target date and time to see a live countdown to that moment - perfect for tracking days until a launch, deadline, holiday, or special event. Both modes feature a progress bar that shifts from blue to yellow to red as time runs out, giving you an at-a-glance sense of urgency.

Share Your Countdown

Every countdown configuration is encoded into the page URL. Copy the link and send it to colleagues, students, or friends - they will see the same countdown when they open it. This makes it easy to coordinate around a shared deadline or event without requiring anyone to install an app or create an account.

Full-Screen and Audio Alerts

Click the full-screen button to expand the countdown across your entire display - ideal for classrooms, conference rooms, or streaming setups. When the countdown reaches zero, an audio chime alerts you so you do not need to watch the screen continuously. The alert is generated using the Web Audio API, meaning it works immediately with no file downloads.

Common Uses for a Countdown Timer

Teachers use countdown timers to manage exam periods, timed quizzes, and activity transitions. Presenters use them to track remaining time during talks and workshops. Fitness trainers use them for interval timing during workouts. Event planners embed countdowns on websites to build anticipation for product launches and conferences. Cooks use them as kitchen timers for multiple dishes. Whatever your need, ClockTools provides a fast, distraction-free countdown that works on any device.