Ready to calculate?
Use our free Military Time Converter — no sign-up required.
Military time — also called the 24-hour clock — eliminates the AM/PM ambiguity of the standard 12-hour system by expressing every hour as a unique number from 0000 to 2359. One conversation about a 1400 meeting is unambiguous; '2 o'clock' requires clarification. Understanding military time is essential for anyone working in healthcare, aviation, the military, emergency services, international business, or simply traveling across time zones. This guide makes conversion straightforward.
Key Takeaways
- Military time: 0000 (midnight) to 2359 (11:59 PM), expressed as 4-digit numbers
- Convert military to standard: hours ≥ 1300, subtract 12 and add PM; hours < 1200, add AM
- Convert standard to military: PM times (not 12:XX PM), add 12 to hour
- Special cases: 12:00 AM = 0000; 12:30 AM = 0030; 12:00 PM = 1200
- Zulu time (Z) = UTC — used in military communications for universal time reference
How Military Time Works
The 24-hour clock runs from 0000 (midnight) to 2359 (one minute before midnight). Each hour is a four-digit number: the first two digits are the hour (00–23), the last two are the minutes (00–59).
Reading military time: 'fourteen hundred hours' for 1400, 'oh-nine-thirty' for 0930, 'twenty-two-fifteen' for 2215.
Key reference points: • 0000 = midnight (start of the day) • 0600 = 6:00 AM • 1200 = noon (12:00 PM) • 1800 = 6:00 PM • 2359 = 11:59 PM • 0000 (next day) = midnight again
- 0000 = midnight | 1200 = noon | 2359 = 11:59 PM
- No AM/PM — every hour is uniquely identified
- Hours 0000–1159 correspond to AM; 1200–2359 correspond to PM
- Spoken format: '14 hundred' or '1400 hours'; '09 thirty' or '0930 hours'
Converting Military Time to Standard Time
To convert military time to 12-hour AM/PM:
For hours 0000–1159 (midnight to 11:59 AM): • Hours 0100–1159: drop the leading zero and add AM • Special case: 0000 = 12:00 AM (midnight); 0001–0059 = 12:01–12:59 AM
For hours 1200–2359 (noon to 11:59 PM): • Hours 1200 and above: subtract 1200 and add PM • Special case: 1200 = 12:00 PM (noon)
Examples: • 0730 → 7:30 AM • 1045 → 10:45 AM • 1300 → 13:00 − 12:00 = 1:00 PM • 1845 → 18:45 − 12:00 = 6:45 PM • 2200 → 22:00 − 12:00 = 10:00 PM • 0000 → 12:00 AM
- Hours 0100–1159: same time, add AM (0730 = 7:30 AM)
- Hours 1300–2359: subtract 12, add PM (1800 = 6:00 PM)
- 0000 = 12:00 AM (midnight) — special case
- 1200 = 12:00 PM (noon) — no subtraction needed
Converting Standard Time to Military Time
To convert 12-hour AM/PM to military time:
For AM times (except 12 AM): • Add leading zero if needed to make 4 digits • Remove the colon • 7:30 AM → 0730 | 11:45 AM → 1145
For PM times (except 12 PM): • Add 1200 to the hour • Remove colon • 1:00 PM → 0100 + 1200 = 1300 | 6:45 PM → 0645 + 1200 = 1845
Special cases: • 12:00 AM (midnight) = 0000 • 12:30 AM = 0030 (not 1230) • 12:00 PM (noon) = 1200 • 12:30 PM = 1230
Mnemonic: for PM times other than 12 PM, just add 12 to the hour.
- AM → military: pad to 4 digits, remove colon (9:00 AM = 0900)
- PM (not 12:XX) → military: add 12 to hour (7:30 PM = 1930)
- 12:00 AM = 0000 | 12:30 AM = 0030 | 12:00 PM = 1200
- Quick check: any military time ≥ 1200 is PM; < 1200 is AM
Where Military Time Is Used
The 24-hour clock is the standard in many professional and international contexts:
Military: all branches of the US Armed Forces use 24-hour time for orders, scheduling, and reporting to eliminate AM/PM confusion during operations.
Healthcare: hospitals and medical records use 24-hour time for medication administration, surgical scheduling, and vital signs documentation — a 1900 medication dose versus 0700 is unambiguous.
Aviation: flight schedules, ATC communications, and METARs (aviation weather reports) use UTC expressed in 24-hour format.
Railways and transit: European and Latin American rail systems universally use 24-hour schedules. Amtrak and bus schedules in the US sometimes use it.
Computing: ISO 8601 standard (used in databases, APIs, file systems) uses 24-hour time: 'T14:30:00' or '14:30'.
International: most countries outside the US, UK, and Canada use 24-hour time as the everyday standard.
- Military and emergency services: 24-hour standard eliminates life-critical AM/PM confusion
- Healthcare: medication and procedure documentation uses 24-hour time universally
- Aviation: METAR weather, ATC, and flight plans all use 24-hour UTC
- ISO 8601 (global computing standard): 24-hour format in timestamps
Time Zones in Military Context
The military uses a specific letter-coded time zone system:
• Z (Zulu): UTC/GMT — the standard military reference time • A–M: UTC +1 to +12 (eastward zones) • N–Y: UTC −1 to −12 (westward zones)
In communications, time is often expressed as '1400Z' (14:00 UTC). US Eastern Time is 'R' (Romeo); Central is 'S' (Sierra); Pacific is 'U' (Uniform).
Zulu time (UTC) is used for all military operations to eliminate confusion between units in different time zones. A 1400Z briefing is unambiguous regardless of where each participant is located.
- Z (Zulu) = UTC — the military reference time used for all international operations
- 1400Z means 14:00 UTC (2:00 PM Greenwich)
- Letters A–Z (excluding J) represent specific UTC offsets
- Always specify Zulu time for multinational or cross-timezone military coordination
Quick Conversion Reference: Military to Standard
A full-day quick reference:
0000 = 12:00 AM | 0100 = 1:00 AM | 0200 = 2:00 AM | 0300 = 3:00 AM | 0400 = 4:00 AM | 0500 = 5:00 AM | 0600 = 6:00 AM | 0700 = 7:00 AM | 0800 = 8:00 AM | 0900 = 9:00 AM | 1000 = 10:00 AM | 1100 = 11:00 AM | 1200 = 12:00 PM | 1300 = 1:00 PM | 1400 = 2:00 PM | 1500 = 3:00 PM | 1600 = 4:00 PM | 1700 = 5:00 PM | 1800 = 6:00 PM | 1900 = 7:00 PM | 2000 = 8:00 PM | 2100 = 9:00 PM | 2200 = 10:00 PM | 2300 = 11:00 PM
Frequently Asked Questions
What is 2000 in military time?
2000 in military time is 8:00 PM. Calculation: 2000 − 1200 = 800, which is 8:00 PM. Military time hours 1300–2359 are converted by subtracting 1200 to get the standard PM time.
What is 1430 in military time?
1430 is 2:30 PM. The hour 14 − 12 = 2, and the minutes are 30. So 1430 = 2:30 PM. In speech: 'fourteen thirty hours.'
How do you say military time?
Military time is spoken digit-by-digit for the hours, then the minutes. 0600 = 'zero six hundred hours'; 1430 = 'fourteen thirty hours'; 0030 = 'zero zero thirty hours'; 1200 = 'twelve hundred hours'; 0000 = 'zero zero zero zero hours' or 'midnight.'
Is military time used in other countries?
Most countries outside the US, UK, and Canada use the 24-hour clock for everyday time. Train schedules in France, Germany, Japan, and virtually all of Latin America use 24-hour time. The 12-hour AM/PM system is primarily a US/UK/Canada/Australia convention — the 24-hour system is the global majority standard.
What time is midnight in military time?
Midnight is 0000 (the start of the day) in military time. The end of the day is 2359 (11:59 PM). There is no '2400' — the next second after 2359 is 0000 of the next calendar day. Some contexts use 2400 to mean 'midnight at the end of this day' (distinct from 0000 = 'midnight at the start of this day').
Try the Military Time Converter
Free, instant, and accurate — calculate now.