Free · No download · Works instantly

Fullscreen Clock
Online — Free

A large, glowing digital clock that fills your entire screen. Perfect for desktops, classrooms, TV screens, presentations and bedrooms. Open in any browser — no app needed.

⛶ Open Fullscreen Clock See features ↓
⛶ FULLSCREEN PREVIEW
00:00
Features

Everything a fullscreen clock needs

True Fullscreen Mode

Press F11 to fill your entire display — no browser chrome, no distractions. Works on any screen size from phone to 4K monitor.

🎨

Multiple Colour Themes

Switch between Arctic Glow (cyan), Solar Ember (amber), Neon Orchid (purple) and Mint Night (green) with a single click on the background.

🔢

12 / 24 Hour Toggle

Press T to instantly switch between 12-hour and 24-hour time formats. Your preference is saved automatically.

📅

Date Display

Shows the current day and date beneath the time. Optionally hide seconds for a cleaner display by pressing S.

📱

Works on Any Device

Phone, tablet, laptop, desktop, smart TV or interactive whiteboard. GlowClock adapts to any screen resolution automatically.

Instant & Always Free

No sign-up, no download, no subscription. Open the browser, navigate to glow-clock.com and press F11. That's it.

Who uses it

The fullscreen clock for every setting

GlowClock's fullscreen clock is used across hundreds of different contexts. Teachers project it during exams and timed activities. Gym coaches use it for interval training. Remote workers keep it on a second monitor as a permanent desk clock. Streamers display it on screen during live sessions. Parents put it on a tablet in children's rooms as a bedside clock.

The common thread is simplicity: a single large display showing the time, with nothing else competing for attention. The fullscreen clock mode removes every browser element — address bar, tabs, bookmarks — leaving only the time on a richly coloured background.

How to use GlowClock in fullscreen

  1. Open glow-clock.com in any browser
  2. Press F11 (desktop) or tap the fullscreen icon (mobile) to go fullscreen
  3. Click the background to cycle through colour themes
  4. Press T to toggle 12/24h format · Press S to show/hide seconds
  5. Use the top bar to switch to Alarm, Timer, Stopwatch or World Time

Colour themes available

Arctic Glow ❄️
Solar Ember 🌅
Neon Orchid 🌸
Mint Night 🌿

Each theme uses carefully balanced colours that are bright enough to read from a distance but not so intense that they cause eye strain during extended display. The darker backgrounds are particularly suited to low-light environments like bedrooms and home theatres.

FAQ

Frequently asked

What is the keyboard shortcut for fullscreen clock?

Press F11 on Windows and Linux browsers. On Mac, press Ctrl+Cmd+F or use the View menu. On mobile devices, tap your browser's fullscreen icon or add GlowClock to your home screen for a near-fullscreen experience.

Can I use this as a clock on my TV?

Yes. Connect your laptop or computer to a TV via HDMI, open glow-clock.com and press F11. The clock scales to any screen size and is clearly readable at large display sizes.

Does the fullscreen clock keep accurate time?

Yes. GlowClock reads directly from your device's system clock, which is typically synchronised with internet time servers. The displayed time is as accurate as your device's system time.

Can I keep the clock running on a second monitor?

Yes. Open GlowClock in a separate browser window, drag it to your second monitor and press F11. It will continue displaying the correct time independently while you work on your primary screen.

Related Tools

More free clock tools

Open the fullscreen clock

Free, instant, no sign-up. Press F11 for a perfect fullscreen experience.

⛶ Go Fullscreen — Free
T: 12/24h · S: seconds© 2026 GlowClock