Military Time Converter & Chart

How to Read Military Time

Military time uses a 4-digit format where the first two digits represent the hour (00–23) and the last two digits represent the minutes (00–59). There is no colon and no AM/PM suffix. The rules are simple:

1. Hours 0000–1259 — read just like AM standard time (with 00 = 12 AM and 12 = 12 PM).
2. Hours 1300–2359 — subtract 12 from the hour to get the PM equivalent. Example: 1700 → 17 − 12 = 5 → 5:00 PM.
3. Minutes never change when converting between 24-hour and 12-hour formats.
4. Midnight is 0000 (start of day) or sometimes 2400 (end of day). Noon is 1200.

How to Convert Military Time to AM/PM

Follow these three steps to convert any military time to standard 12-hour time:

1. Look at the hour (first two digits). If it is less than 12, it's a morning hour (AM). If it is 12 or greater, it's an afternoon/evening hour (PM).
2. If the hour is 13 or greater, subtract 12. For example, 1800 − 1200 = 600 → 6 o'clock. Leave the minutes unchanged.
3. Add AM or PM. Use AM for hours 0000–1159 and PM for hours 1200–2359.

Worked examples:

• 0730 → Hour 7 is before noon, keep as is → 7:30 AM
• 1200 → Noon, written as 12:00 PM
• 1530 → 15 − 12 = 3, after noon → 3:30 PM
• 2045 → 20 − 12 = 8, after noon → 8:45 PM
• 0000 → Midnight → 12:00 AM

How to Say Military Time

Military time is spoken differently than regular time. Instead of saying "seventeen hundred hours" or "five PM", the standard spoken forms follow a few simple rules:

1. On-the-hour times are pronounced as the number plus the word "hundred". 1700 = "seventeen hundred". 0800 = "zero eight hundred".
2. Hours before 1000 are prefixed with "zero" for each leading zero digit. 0600 = "zero six hundred", not "six hundred".
3. Times with minutes use the full four-digit number. 1730 = "seventeen thirty". 0945 = "zero nine forty-five".
4. Midnight (0000) is often called "zero hundred" or simply "midnight". Some branches use "twenty-four hundred" for end-of-day.
5. The suffix "hours" (as in "1700 hours") is common in US military usage but is not part of the NATO or international standard.

Why Use Military Time?

The 24-hour clock is used wherever precision matters and AM/PM ambiguity could cause serious problems:

• Military operations — coordinating forces across time zones without miscommunication
• Aviation — flight plans, ATC communications, and airline schedules worldwide
• Healthcare — hospital charts, medication timing, and shift handoffs (a wrong AM/PM could be fatal)
• Emergency services — police, fire, and EMS dispatching
• Computing and IT — log files, timestamps, and scheduled jobs
• Public transit — train and bus schedules in most countries
• Scientific research — experiment logs and astronomical observations

Most countries outside North America use the 24-hour clock as their default for schedules, timetables, and digital displays, even if they informally say "five o'clock" instead of "seventeen hundred" in conversation.

Military Time vs Standard Time: Key Differences

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