Military Time Converter (12/24-Hour)
Convert between 12-hour AM/PM time and 24-hour military time, in both directions.
To turn a PM time into 24-hour (military) time, add 12 to the hour: 2:45 PM is 14:45, written 1445 and spoken “fourteen forty-five”. AM hours stay the same, except 12:00 AM becomes 00:00 (midnight) and 12:00 PM stays 12:00 (noon). Minutes never change.
What 24-hour and military time are
The 24-hour clock numbers the hours of a day from 0 to 23, so there is no AM or PM and every time of day has a single value. In everyday US usage the same system is called military time and is usually written without a colon — 14:45 becomes 1445. The two are the same clock; only the way you write and say it differs. Minutes are identical in both formats, so the only thing that ever changes is the hour and whether an AM/PM label is attached.
Only the hour is adjusted; the minutes carry over exactly.
Worked example
Convert 2:45 PM to 24-hour time.
- 1 Check whether it is AM or PM. 2:45 PM is in the afternoon, so it is a PM time.
- 2 Adjust the hour. For a PM time from 1 to 11, add 12 to the hour: 2 + 12 = 14.
- 3 Keep the minutes as they are. The 45 minutes do not change, giving 14:45.
- 4 Write and say the military form. Drop the colon for 1445, read aloud as “fourteen forty-five”.
12-hour to 24-hour chart
On-the-hour mapping for a full day; add the minutes unchanged to any row (2:45 PM sits on the 13:00 row as 14:45 — read the 1:00 PM line for the hour rule).
| 12-hour | 24-hour | Military |
|---|---|---|
| 12:00 AM (midnight) | 00:00 | 0000 |
| 1:00 AM | 01:00 | 0100 |
| 2:00 AM | 02:00 | 0200 |
| 3:00 AM | 03:00 | 0300 |
| 4:00 AM | 04:00 | 0400 |
| 5:00 AM | 05:00 | 0500 |
| 6:00 AM | 06:00 | 0600 |
| 7:00 AM | 07:00 | 0700 |
| 8:00 AM | 08:00 | 0800 |
| 9:00 AM | 09:00 | 0900 |
| 10:00 AM | 10:00 | 1000 |
| 11:00 AM | 11:00 | 1100 |
| 12:00 PM (noon) | 12:00 | 1200 |
| 1:00 PM | 13:00 | 1300 |
| 2:00 PM | 14:00 | 1400 |
| 3:00 PM | 15:00 | 1500 |
| 4:00 PM | 16:00 | 1600 |
| 5:00 PM | 17:00 | 1700 |
| 6:00 PM | 18:00 | 1800 |
| 7:00 PM | 19:00 | 1900 |
| 8:00 PM | 20:00 | 2000 |
| 9:00 PM | 21:00 | 2100 |
| 10:00 PM | 22:00 | 2200 |
| 11:00 PM | 23:00 | 2300 |
Midnight, noon, and who uses the 24-hour clock
Midnight. The standard start of the day is 00:00, written 0000. Some schedules use 24:00 (2400) to mark the end of a day, which is the same instant as 00:00 the next day; the tool always reports midnight as 00:00 to avoid ambiguity.
Noon. Midday is 12:00 (1200) in both formats — it is the one hour that does not shift, because 12 PM already sits at hour 12.
Who uses it. The 24-hour clock is the everyday standard across most of Europe, Latin America, and Asia, and worldwide for aviation, healthcare, transit timetables, and the military. In the United States and Canada the 12-hour AM/PM clock dominates daily life, so being able to switch quickly between the two is useful when reading foreign schedules or hospital and duty rosters.