Online clock

What time is it? The answer in huge digits

This online clock shows your device's time in very large digits, updated every second, with the full date underneath. Pick a digital clock or an analog dial, 12-hour or 24-hour format, a light, dark or custom color theme, then switch to full screen. Everything runs in your browser: nothing to install, no account.

An old monitor or a spare tablet becomes a wall clock. In a classroom, the analog dial on the projector helps kids learn to tell time. In a meeting or during a presentation, everyone can see the time without reaching for a phone. In the kitchen, a tablet on the counter shows the time from across the room. At night, the dark theme turns it into a dim bedside clock.

How to use the clock

1. Under "Style", choose "Digital" or "Analog (with hands)". For the dial, "Second hand" offers "Smooth sweep" or "Ticking".
2. Under "Format", pick "12-hour (AM/PM)" or "24-hour": 2:05:09 PM becomes 14:05:09.
3. Untick "Show seconds" or "Show date".
4. Under "Theme", choose "Light", "Dark" or "Custom colors". With your own colors, the tool checks the contrast: below 4.5:1, the text switches to white or black so it stays readable.
5. Click "Full screen" or press F. The mouse pointer hides after 3 seconds without movement. Esc or "Exit full screen" takes you back.
6. Tick "Keep screen on" so the device does not go to sleep while the page is showing.

Your settings are saved on your device. "Copy link" gives you an address that keeps the chosen style, format and time zone.

Where does the time come from?

The clock shows your device's own time and does not correct it. Your operating system (Windows, macOS, Android, iOS) sets that time at regular intervals by asking time servers on the internet, using the Network Time Protocol (NTP). Between two syncs, the internal clock drifts slightly, which is why a laptop and a phone side by side can be a second or two apart. If your device is off by minutes, turn on automatic date and time in its settings.

Time zones, 12-hour vs 24-hour, daylight saving time

By default the clock follows your device's time zone. The "Time zone" list also offers 40 major cities. Example: when it is noon in New York on January 15, it is 2:00 AM the next day in Tokyo; when it is noon in London on that date, it is 9:00 PM in Tokyo.

The United States, Canada, Australia and India mostly use the 12-hour clock with AM and PM. In the UK, people say "half past two" but train timetables use the 24-hour clock. Most of continental Europe writes times in 24-hour format.

Daylight saving time is applied automatically. In the US, clocks go forward on the second Sunday in March (March 14, 2027) and back on the first Sunday in November (November 7, 2027). In the UK, they change on the last Sunday of March and of October. Your browser knows these rules for each time zone.

Keeping the screen on

The "Keep screen on" box uses the screen wake lock that recent browsers offer. It only works while the page is visible: if you switch tabs, the screen may turn off again. If your browser does not support it, change the sleep or auto-lock setting on your device.

The site also has a time zone converter, a stopwatch and a timer.

Frequently asked questions

Is this the exact time?

It is as accurate as your device's clock. A device with automatic time is usually within a second. The tool does not contact any time server and does not correct anything.

Why is it a second off from my phone?

Each device syncs at different moments and drifts in between. A gap of one or two seconds is normal.

Does the clock work offline?

Once the page has loaded, yes: the time comes from your device, not from the internet.

How do I show the time in another city?

Pick the city under "Time zone". The city name and its offset from UTC appear under the clock, for example "Time in Tokyo (UTC+9)".