Online Clock - Free Clock With Seconds
This online clock shows the current time straight in your browser - no app, no signup. It syncs with our server the moment the page loads, so the online time you see stays right even when your own device clock has drifted. Switch to an analog clock, add milliseconds, flip between 24-hour and AM/PM, or blow it up full screen with the F key.
If you need the current time somewhere else in the world - Tokyo, London, New York, Dubai or any other city - use the world clock instead. It shows many cities at once with their time differences. This page stays focused on the time where you are.
How is this online clock different from the one on your device?
Fair question: every phone and laptop already shows the time in a corner. Four reasons to open a clock in a browser tab:
- It shows seconds. The Windows taskbar and the macOS menu bar hide seconds by default. When you need to hit an exact moment - a shift change, a drop, an auction close - you need to watch the seconds run.
- It is right even when your device is wrong. On load, the clock checks against our server and runs from that reading. A machine that has not synced in a while can be off by seconds or minutes without its owner ever noticing.
- It is big enough to read across a room. The digits fill the screen, legible from the back of a classroom or a gym. The operating system clock is the size of a fingertip.
- Milliseconds when you want them. Very few system clocks will show hundredths of a second; here it is one switch away.
Display modes
Digital clock
The default view shows hours, minutes and seconds in large figures, set in a tabular numeric face so the digits never jitter as they change.
Analog clock
Open settings and pick Analog for a classic round face: all twelve numerals, a tick for every minute with the hour marks weighted heavier, rounded hour and minute hands, and an orange second hand that sweeps continuously instead of stepping. Handy when you simply prefer a dial, or when teaching a child to read one.
Milliseconds
Open settings and turn on Show milliseconds: a small pair of digits appears at the lower right of the main time, hundredths of a second, exactly as on the stopwatch. They run from your device's own clock anchored to the synced reading, so they are smooth and continuous - but do not treat them as scientific measurement. To time an interval precisely, use the stopwatch, which measures to a hundredth of a second and does not depend on the system clock.
24-hour or AM/PM
Open settings and choose 24-hour or AM/PM. In AM/PM mode the clock appends AM or PM. Your choice is remembered for next time.
What full screen is for
Press the full screen button next to the settings icon, or hit F. The clock scales up to fill the display, and after two seconds without mouse movement the remaining controls fade out, leaving nothing but the time on an empty background. Move the mouse to bring them back; press Esc or F to exit.
- Classrooms and exam halls. Put it on the projector so the whole room works from one clock and nobody has to ask how long is left.
- Talks and conferences. Run it on a confidence monitor so the speaker can glance at the time without distracting the audience.
- Gyms and training floors. A tablet propped in the corner shows the time at a size everyone can read.
- Livestreams and studios. Drop it in a corner of frame so viewers see the real time, or so the crew can hit its cues.
- Reception desks and shops. An old monitor becomes a wall clock without buying anything.
Why the time here can differ from your device
This page takes its time from a server, while your computer or phone runs on its own internal clock. Internal clocks drift, and if automatic sync is switched off or the machine has been offline for a while, the gap can grow to minutes.
If the time here is noticeably different from your device, your device is almost certainly the one that is wrong. To turn sync back on:
- Windows: Settings -> Time & language -> Date & time -> turn on Set time automatically, then click Sync now.
- macOS: System Settings -> General -> Date & Time -> turn on Set date and time automatically.
- Android / iOS: Settings -> Date & time -> turn on Automatic date & time.
On accuracy: the real margin is about half a second, limited by how the server reports time over the web. Precise enough for everyday use.
Keyboard shortcuts
- F - Enter or leave full screen
- Esc - Leave full screen
The remaining options - digital or analog, milliseconds, 24-hour or AM/PM - live in the settings button under the clock, and are remembered for your next visit.
Need the time somewhere else in the world?
This page always shows the time where you are. When you need to know what time it is in Tokyo, London, New York or Dubai - to call family abroad, schedule a meeting across time zones, or catch a drop - use the world clock. You can track several cities at once, see the offsets between them, and tell at a glance whether it is day or night there.
Frequently asked questions
Is this online clock accurate?
On load, the clock checks against the stopwatch-online.com server and runs from that reading, so it stays right even when your device clock has drifted. The real margin is about half a second - precise enough for everyday use.
Why does the time here differ from my device?
Because this page reads the time from a server while your device runs on its own internal clock. A machine that has not synced for a while can be off by seconds or minutes. Turn automatic time sync back on in your system settings.
Does it show seconds?
Yes, hours, minutes and seconds are always shown. That is the main difference from the Windows taskbar or the macOS menu bar, which usually show only hours and minutes.
Can I see milliseconds?
Yes. Open the settings button under the clock and turn on Show milliseconds - a small pair of digits appears at the lower right of the main time, hundredths of a second, the same as on the stopwatch. They run from your device's clock anchored to the synced reading, so they are smooth rather than millisecond-accurate.
Can I switch to an analog clock?
Yes. Open the settings button and pick Analog for a round face with all twelve numerals, a tick for every minute, rounded hour and minute hands and a sweeping orange second hand. Pick Digital to go back.
How do I switch between 24-hour and AM/PM?
Open the settings button under the clock and choose 24-hour or AM/PM. In AM/PM mode the clock appends AM or PM after the time.
How do I view the clock full screen?
Press the full screen button next to the settings icon, or hit the F key. Everything else fades out after two seconds, leaving only the clock. Move the mouse to bring the controls back, and press Esc or F to exit.
Does the page remember my settings?
Yes. Clock type, hour format and the milliseconds switch are stored in localStorage in your own browser, so the page opens the way you left it. Nothing is sent to a server.
How do I see the time in another country?
This page only shows the time where you are. For Tokyo, London, New York, Dubai or anywhere else, use the world clock, where you can track several cities at once and compare their offsets.
Does the clock keep running when I switch tabs?
Yes. While the tab is hidden the page stops repainting to save battery, but the time is still tracked against real time. Come back to the tab and it shows the current time immediately.