12 Hour Timer - Free Online Countdown Timer

12:00:00

12 Hour Timer

Customize Your Timer Experience

Ring Settings:

Outer Ring Color:

Inner Ring Color:

Progress Ring Color:

Progress Shadow Color:

Time Display Settings:

Time Display Color:

Time Display Size (px):

Time Display Shadow Color:

Background Customization

Choose Your Background

Timer Features & Benefits

Visual Progress Tracking

Watch your time progress with an elegant circular progress ring that provides instant visual feedback on your remaining time.

Fullscreen Mode

Eliminate distractions with immersive fullscreen mode, perfect for focused work sessions and study time.

Complete Customization

Personalize every aspect including colors, backgrounds, display size, and timer duration to match your preferences.

Session Tracking

Keep track of completed sessions to monitor your productivity and maintain motivation throughout your day.

Audio Notifications

Receive pleasant audio alerts when your timer completes, ensuring you never miss the end of a session.

Free & Easy to Use

No registration required. Start timing immediately with an intuitive interface that works on any device.

How to Use the Timer

1. Set Your Duration

Enter your desired time in the Duration field (format: HH:MM:SS or MM:SS). Default is 12 hours.

2. Customize Appearance

Choose your preferred colors for the progress rings, time display, and background. Upload custom images or select from presets.

3. Start Timer

Click the START button to begin your countdown. Use PAUSE to temporarily stop, and the reset button to start over.

4. Use Fullscreen Mode

Click the fullscreen button for an immersive, distraction-free timing experience perfect for focused work.

Frequently Asked Questions

Can I set a custom timer duration?

Yes! You can set any duration using the HH:MM:SS format in the Duration field. The timer supports hours, minutes, and seconds.

Does this work on mobile devices?

Absolutely! The timer is fully responsive and works perfectly on smartphones, tablets, and desktop computers.

Will the timer keep running if I switch tabs?

Yes, the timer continues counting down even when the tab is not active. You'll receive an audio notification when time is up.

Can I save my customization settings?

Your color and appearance settings are saved in your browser, so they'll be there the next time you visit.