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Military Time Converter

A free online military time converter that converts standard 12-hour time (with AM/PM) to 24-hour military time, and back again, with a spoken military-style reading of the result.

How 12-hour to 24-hour conversion works

For AM times, the hour stays the same (except 12 AM, which becomes 00). For PM times, 12 is added to the hour (except 12 PM, which stays 12). For example, 2:30 PM becomes 14:30, and 12:00 AM becomes 00:00.

How 24-hour to 12-hour conversion works

Hours 00 through 11 are AM (with 00 displayed as 12 AM), and hours 12 through 23 are PM (with 12 displayed as 12 PM, and 13-23 reduced by 12). For example, 14:30 becomes 2:30 PM.

Why military time avoids AM/PM confusion

Military time removes the need for an AM/PM label entirely, since every hour from 00 to 23 is unique - this avoids scheduling mistakes that can happen when AM/PM is misread or omitted.

Full 12-Hour to Military Time Conversion Table (Every 15 Minutes)

12-Hour TimeMilitary Time (24-Hour)
12:00 AM00:00
12:15 AM00:15
12:30 AM00:30
12:45 AM00:45
1:00 AM01:00
1:15 AM01:15
1:30 AM01:30
1:45 AM01:45
2:00 AM02:00
2:15 AM02:15
2:30 AM02:30
2:45 AM02:45
3:00 AM03:00
3:15 AM03:15
3:30 AM03:30
3:45 AM03:45
4:00 AM04:00
4:15 AM04:15
4:30 AM04:30
4:45 AM04:45
5:00 AM05:00
5:15 AM05:15
5:30 AM05:30
5:45 AM05:45
6:00 AM06:00
6:15 AM06:15
6:30 AM06:30
6:45 AM06:45
7:00 AM07:00
7:15 AM07:15
7:30 AM07:30
7:45 AM07:45
8:00 AM08:00
8:15 AM08:15
8:30 AM08:30
8:45 AM08:45
9:00 AM09:00
9:15 AM09:15
9:30 AM09:30
9:45 AM09:45
10:00 AM10:00
10:15 AM10:15
10:30 AM10:30
10:45 AM10:45
11:00 AM11:00
11:15 AM11:15
11:30 AM11:30
11:45 AM11:45
12:00 PM12:00
12:15 PM12:15
12:30 PM12:30
12:45 PM12:45
1:00 PM13:00
1:15 PM13:15
1:30 PM13:30
1:45 PM13:45
2:00 PM14:00
2:15 PM14:15
2:30 PM14:30
2:45 PM14:45
3:00 PM15:00
3:15 PM15:15
3:30 PM15:30
3:45 PM15:45
4:00 PM16:00
4:15 PM16:15
4:30 PM16:30
4:45 PM16:45
5:00 PM17:00
5:15 PM17:15
5:30 PM17:30
5:45 PM17:45
6:00 PM18:00
6:15 PM18:15
6:30 PM18:30
6:45 PM18:45
7:00 PM19:00
7:15 PM19:15
7:30 PM19:30
7:45 PM19:45
8:00 PM20:00
8:15 PM20:15
8:30 PM20:30
8:45 PM20:45
9:00 PM21:00
9:15 PM21:15
9:30 PM21:30
9:45 PM21:45
10:00 PM22:00
10:15 PM22:15
10:30 PM22:30
10:45 PM22:45
11:00 PM23:00
11:15 PM23:15
11:30 PM23:30
11:45 PM23:45

Common Mistakes to Avoid

Forgetting midnight is 0000, not 2400

Solution:

Midnight at the start of a day is written 0000 (or sometimes 2400 for the end of the day in specific contexts) - writing '12:00' without the correct convention causes confusion.

Mixing up 12 AM and 12 PM when converting manually

Solution:

12 AM (midnight) converts to 00:00, while 12 PM (noon) converts to 12:00 - both involve the number 12, which is the most common manual conversion error.

Assuming military time always includes a colon

Solution:

Military time is often written without a colon (1430) in formal contexts, though this calculator displays it with a colon (14:30) for readability.

Reading only the first two digits as the hour incorrectly

Solution:

In a 4-digit military time like 0930, the first two digits (09) are the hour and the last two (30) are the minutes - not a decimal or fraction.

Forgetting the leading zero on single-digit hours

Solution:

Military time always uses two digits for the hour, so 9:00 AM is written 0900, not 900.

Assuming military time uses a 12-hour cycle

Solution:

Military time counts a full 24-hour day without repeating, so there's no need to specify AM or PM at all.

Frequently Asked Questions

For AM times, keep the hour the same (12 AM becomes 00). For PM times, add 12 to the hour (12 PM stays 12). For example, 2:30 PM becomes 14:30.
Hours 00-11 are AM (00 is shown as 12 AM); hours 12-23 are PM (12 stays 12 PM, and 13-23 have 12 subtracted). For example, 14:30 becomes 2:30 PM.
12 PM (noon) is 12:00 in military time - it doesn't change.
12 AM (midnight) is 00:00 in military time.
It removes AM/PM ambiguity entirely, which matters when precise timing and clear scheduling communication is critical.
Yes - 'military time' is simply the common name for the 24-hour clock format used internationally.
No - every calculation runs locally in your browser. Nothing you enter is uploaded, logged, or stored on any server.

Free Online Military Time Converter

Convert 12-hour clock time to 24-hour military time, or military time back to standard time, instantly. Includes a spoken military-style reading, like "fourteen thirty hours."

What You Get

  • Instant conversion between 12-hour (AM/PM) and 24-hour (military) time
  • Both formats shown side by side
  • A phonetic, spoken-style military time reading
  • Correct handling of midnight (0000) and noon (1200) edge cases

Who Uses This Calculator

Military and government personnel, aviation and logistics workers, healthcare and emergency services staff, and anyone reading a 24-hour schedule or timetable.