Online digital clock – the exact time with seconds
How to use this digital clock
The big numbers show the exact time where you are, with seconds. It is checked against internet time, so it stays right even if your device clock drifts.
Switch between 12h and 24h, hide the seconds, pick one of six colour themes, change the style and drag the size slider to make the numbers smaller or bigger.
Press Full screen or the F key. The buttons fade away after a moment, leaving only the clock, which is handy on a second monitor or a TV.
About the online digital clock
A digital clock shows the time as numbers instead of hands, which makes it quick to read from across a room. This one runs in your browser, so there is nothing to download or install. Open the page and the clock starts at your local time.
The time does not come from your device alone. The page checks it against internet time servers and allows for the delay of your connection, so the seconds tick over at the right moment. Your settings, such as the theme, the style and the size, are saved in your browser for your next visit.
Want the time somewhere else? Type a city into the search box above the clock and it switches to that place, or add cities to the world clocks further down the page.
World clocks
Click a city to make it the main clock. Your cities are saved in this browser.
More time tools
See all →Frequently asked questions
Is this digital clock accurate?
Yes. When the page loads it compares your device time with internet time servers and corrects any difference, so it stays accurate to a fraction of a second even if your device clock is off.
How do I make the digital clock full screen?
Press the Full screen button under the clock or the F key on your keyboard. Press Esc or F again to leave full screen.
Can I show the time without seconds?
Yes. Press the Seconds button to hide them, and press it again to bring them back.
How do I make the numbers bigger or smaller?
Use the size slider next to the style menu. Drag it to the left to shrink the clock and to the right to make it as large as the screen allows.
Does the digital clock work offline?
Once the page has loaded it keeps running from your device, even if the connection drops. It just cannot check the time against internet time again until you are back online.
Can I use it on a phone or tablet?
Yes. The clock fits any screen size and works in landscape and portrait. Turn your phone sideways for the biggest numbers.
More answers: how many time zones a country has, UTC vs GMT, when the clocks change →