Military Time Converter - 24-Hour and 12-Hour Time

How Military Time Works

Military time runs on a 24-hour clock: the day starts at 0000 (midnight) and ends at 2359. The first twelve hours match the AM clock, so 0900 is simply 9:00 AM. From 1:00 PM onward you add 12, which makes 1:00 PM into 1300, 5:30 PM into 1730, and 11:45 PM into 2345. Going the other way, subtract 12 from anything at 1300 or later: 2100 minus 12 gives 9:00 PM. The two times people trip over are midnight (0000, sometimes written 2400 for the end of a day) and noon (1200), because 12 AM and 12 PM are the ambiguous spots on a 12-hour clock.

The armed forces, hospitals, aviation, emergency services, and most of the world outside the United States use the 24-hour clock because it removes AM/PM mistakes entirely. A medication ordered for 0800 cannot be given twelve hours late the way an ambiguous "8 o'clock" can. In spoken military usage, times are read as hundreds: 1300 is "thirteen hundred", 0700 is "zero seven hundred" (often "oh seven hundred" informally), and 1530 is "fifteen thirty". NATO forces append a timezone letter, so 1300Z means 1300 Zulu time, which is UTC.

Note a small difference between military style and ordinary 24-hour notation: military time is written without a colon and always with four digits (0630), while civilian 24-hour time usually keeps the colon (06:30). This converter accepts both, plus compact entries like 630 or 130pm, and converts live in whichever direction you type. The reference table covers all 24 hours with the standard spoken phrase for each.

Working across countries? Most of Europe, Latin America, and Asia write timetables in 24-hour format, so a Dutch train at 17:12 is 5:12 PM. If you also need to shift a meeting across time zones, the Timezone Converter on ToolForte handles that, and the Date Calculator helps when you are counting days rather than hours. All tools run free in your browser.