Military Time Converter
Convert between 12-hour AM/PM civilian time and 24-hour military time. Returns the time in the opposite format.
Last updated: October 2026
Converted time
1530 hours (15:30)
Formula below · 2 sources (NIST, iso.org) · Updated Oct 2026
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About this calculator
Military time (24-hour clock) uses hours 0 through 23 rather than 12 AM through 12 PM. It removes AM/PM ambiguity — "12:00" can mean either noon or midnight in civilian usage, but "1200" is unambiguously noon and "0000" is midnight. The 24-hour clock is standard in military operations, aviation, medicine, and most of the world outside the US, Canada, Australia, and a few other English-speaking countries.
Conversion rules (12-hour → 24-hour): 12 AM = 0000. 1–11 AM = 0100–1100 (just add a leading zero). 12 PM = 1200. 1–11 PM = 1300–2300 (add 12 to the hour). Conversion rules (24-hour → 12-hour): 0000 = 12 AM. 0100–1100 = 1–11 AM. 1200 = 12 PM. 1300–2300 = 1–11 PM (subtract 12).
Military time is written without a colon in military correspondence (1430, not 14:30). ISO 8601 and civilian European usage typically keep the colon (14:30). Both are 24-hour — the colon/no-colon is a style convention, not a functional difference.
Military time chart: 24-hour to 12-hour, and how each hour is spoken
Scroll sideways to see all columns →
| Military (24-hour) | Standard (12-hour) | Spoken |
|---|---|---|
| 0000 | 12:00 AM (midnight) | zero hundred hours |
| 0100 | 1:00 AM | zero one hundred hours |
| 0200 | 2:00 AM | zero two hundred hours |
| 0300 | 3:00 AM | zero three hundred hours |
| 0400 | 4:00 AM | zero four hundred hours |
| 0500 | 5:00 AM | zero five hundred hours |
| 0600 | 6:00 AM | zero six hundred hours |
| 0700 | 7:00 AM | zero seven hundred hours |
| 0800 | 8:00 AM | zero eight hundred hours |
| 0900 | 9:00 AM | zero nine hundred hours |
| 1000 | 10:00 AM | ten hundred hours |
| 1100 | 11:00 AM | eleven hundred hours |
| 1200 | 12:00 PM (noon) | twelve hundred hours |
| 1300 | 1:00 PM | thirteen hundred hours |
| 1400 | 2:00 PM | fourteen hundred hours |
| 1500 | 3:00 PM | fifteen hundred hours |
| 1600 | 4:00 PM | sixteen hundred hours |
| 1700 | 5:00 PM | seventeen hundred hours |
| 1800 | 6:00 PM | eighteen hundred hours |
| 1900 | 7:00 PM | nineteen hundred hours |
| 2000 | 8:00 PM | twenty hundred hours |
| 2100 | 9:00 PM | twenty-one hundred hours |
| 2200 | 10:00 PM | twenty-two hundred hours |
| 2300 | 11:00 PM | twenty-three hundred hours |
How to use
Choose the direction, then enter the hour and minute (and AM or PM for 12-hour input). Example (the defaults): 3:30 PM to military time. PM hours from 1 to 11 get 12 added, so 3 + 12 = 15 and the result is 1530 hours (15:30). Other cases: 12:15 AM is 0015, 12:45 PM is 1245, and 7:05 AM is 0705. Going the other way, 1945 is 7:45 PM and 0000 is 12:00 AM.
Frequently asked questions
Is 1200 noon or midnight?
1200 is noon (12 PM civilian). Midnight is 0000 (or sometimes 2400 in shipping and railway timetables, meaning the end of a day rather than the start of the next). In military communication, 0001 is one minute after midnight, which unambiguously distinguishes the start of the new day from 2400, the end of the previous one.
How do you say military time out loud?
US military reads each hour as a four-digit block: 0800 is "oh-eight-hundred", 1300 is "thirteen-hundred", 1435 is "fourteen-thirty-five". Aviation uses similar phrasing. Civilian 24-hour usage in Europe typically says "quinze heures trente" (French) or "fünfzehn Uhr dreißig" (German).
What is 24:00?
ISO 8601 allows 24:00 as the end-of-day equivalent to 00:00 the next day, but it is rarely used in practice. Standard usage is 0000 for midnight-start-of-day. Trains and airline schedules sometimes list 24:00 as an end-of-day cutoff.
Do other countries use military time in daily life?
Most of continental Europe, most of Asia, and Latin America use 24-hour time by default in schedules, official documents, and digital displays. The US, UK, Canada, Australia, and some others use 12-hour AM/PM in daily speech but 24-hour in military, medical, and computing contexts.
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Sources & references
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