Digital Clock

A digital clock skips the dial and hands entirely and just prints the time as numbers — hours, minutes, and seconds updating in place. Where an analog face makes you interpret angles, a digital readout is unambiguous: there’s nothing to misjudge between “almost quarter past” and “just past quarter past.” This one also shows the full date and your time zone underneath.

12-hour and 24-hour formats

There are two common conventions for writing the time. 12-hour format cycles 1 through 12 twice a day and needs an AM or PM label to separate morning from evening — it’s the everyday convention in the United States and a handful of other countries. 24-hour format, sometimes called “military time,” counts straight through from 00:00 at midnight to 23:59 just before the next midnight, so every hour of the day has one unique number and no AM/PM tag is needed. Most of the world outside North America defaults to 24-hour time for schedules, transit, and official documents, even where 12-hour time is still normal in conversation.

Reading 24-hour time quickly

For any time after noon, subtract 12 to get the 12-hour equivalent: 15:00 is 3:00 PM, 20:30 is 8:30 PM, 23:45 is 11:45 PM. Before noon the two formats mostly agree, except that midnight is 00:00 and the small hours keep a leading zero — 01:00, 02:00, and so on.

How this clock works

This clock reads directly from your device’s system clock, refreshing every second, and it picks up your device’s configured time zone automatically — so the numbers you see are your local time without any setup on this page. If you travel or your device’s time zone changes, the display follows rather than staying fixed to wherever it was first loaded. Because there’s no independent time source, the clock is only as correct as the device showing it.

Where a digital clock is handy

• A clear, readable time display on a second screen or a spare device
• A full-screen countdown reference during work sessions or events
• Confirming the exact minute before a call, a deadline, or a departure
• Checking your device’s clock against another source

For the hands-and-dial version, see the analog clock. To focus on the date, use today’s date or what day of the year it is.

24-hour to 12-hour conversion chart

To convert any afternoon time, subtract 12 from the hour: 19:45 is 7:45 PM. Morning times keep their hour, and 00:xx is 12:xx AM. In military usage 1900 is said “nineteen hundred hours”.