About the Online Clock
This Online Clock shows the current time in your browser, updated every second, with the date and the time zone underneath. Choose a digital display or an analog face with hands, switch between 12-hour and 24-hour time, hide or show the seconds, and pick another time zone from a list of popular cities. A row of world clocks shows the time and UTC offset in New York, London, Dubai, Mumbai, Singapore, Tokyo and Sydney at a glance, and a Full screen button fills the display for a classroom wall, a meeting or an event. The clock reads your device's own time and uses the time zone data built into your browser. It is not an atomic clock and does not sync with a time server, so if your device clock is wrong, this one is wrong too.
Updated October 2026
How to use the Online Clock
- 1Open the page and read the time, date and time zone.
- 2Pick a different city from the Time zone list if you want its time.
- 3Tick or untick 24-hour clock, Show seconds and Analog clock to change the look.
- 4Press Full screen to fill the display, and press Escape to leave it.
A clock in your browser
The page keeps a small timer running that reads your device clock several times a second and redraws the display, so the seconds stay in step. Nothing is downloaded while it runs, and it does not send your time or your location anywhere. Because it is an ordinary web page, you can put it on a spare screen, a projector or a wall display without installing anything.
Choose the analog face when you want to see the shape of the hour, and hide the seconds if a moving display distracts you. The analog hands show the same time as the digital display in the chosen zone.
Time zones and world clocks
The Time zone list starts with your own device zone, followed by seventeen cities that cover most of the world. The clock uses the time zone rules in your browser, so it follows daylight saving changes on its own. The UTC offset next to the zone name tells you how far the place is from Coordinated Universal Time at this moment, and it changes when clocks move forward or back.
To convert a specific time, such as a meeting at 3 pm your time, use the Time Zone Converter. This clock is for the time right now.
12-hour vs 24-hour time
Twelve-hour time repeats the numbers 1 to 12 twice a day and adds AM or PM. Twenty-four-hour time counts from 00:00 to 23:59, which avoids any confusion between morning and evening and is common in schedules, transport and computing. Both displays here show the same moment, so use whichever you find easier to read.
Full-screen clock for classrooms and events
A big, steady clock helps in exams, workshops, talks and workouts. Press Full screen, put the browser on the display you need and leave it running. Use Stopwatch for timing events or Countdown Timer for counting down to a deadline.
Browsers may dim or sleep a screen that nobody touches, and this page does not stop that. On a phone that locks itself, change the screen timeout in the device settings if you need the clock to stay visible. To plan a call with someone far away, use the Time Zone Converter, and time a task with the Online Stopwatch.
Features
- Live digital clock that updates every second
- Analog clock face with hour, minute and second hands
- 12-hour or 24-hour display
- Seconds can be hidden
- 17 popular time zones plus your own device zone
- World clocks with UTC offsets
- Full-screen mode where the browser allows it
Frequently asked questions
What time is it now?
The large clock at the top shows it, in the time zone of your device unless you choose another one. Underneath you see the date and the offset from UTC, for example UTC+5:30, so you know exactly which zone the time belongs to.
How do I make the clock full screen?
Press the Full screen button below the clock. The clock, date and zone fill your display, and pressing Escape brings you back. The button only appears in browsers that allow full screen, and some phones do not offer it.
Can I show the time in another city?
Yes. Open the Time zone list and choose a city such as Tokyo or Sao Paulo, and the big clock switches to that zone. The World clocks section also shows seven cities at once, so you can check several without changing anything.
How accurate is the online clock?
It is exactly as accurate as your device. The page reads your computer or phone clock and does not check a time server. Most devices set themselves automatically and stay within a second or so, but a device set by hand can be minutes out.
How do I switch between 12-hour and 24-hour?
Untick 24-hour clock for the 12-hour display with AM and PM, and tick it again for 24-hour time, where 14:30 means half past two in the afternoon. The world clocks change with it.
Why does the time differ from my phone?
Usually because of the time zone. Check that the Time zone list is set to Your device. If the zone matches and the time is still different, one of the two device clocks is wrong, and turning on automatic date and time in the system settings fixes that.