Military Time Chart: How to Read and Convert It

Military time, also called the 24-hour clock, uses four digits from 0000 to 2359 instead of the 12-hour AM/PM format. Use the chart below as a quick military time converter, then read on for the conversion rules, pronunciation guide, and common mistakes to avoid.

Military Time Chart: Full 24-Hour Conversion

Note: 2400 marks the very end of the day and is numerically the same moment as 0000 the following day. In practice, 0000 is the standard way to write midnight, while 2400 sometimes appears on schedules or logs to indicate "end of day."

Understanding and being able to read military time is a valuable skill that often goes overlooked. Yet for anyone interested in fields like healthcare, aviation, emergency services, and the military, it can be a crucial element of day-to-day life. Unlike the standard 12-hour clock, military time offers an unambiguous format that's valued for clear, exact time readings.

While the 12-hour clock with AM and PM notations is the standard in most areas of American life, military time is a consistent feature in work environments where precision is paramount. If you're looking to bolster your time-telling skills, or you're simply curious about the ins and outs of military time, this guide breaks it down into three easy steps.

Step 1: What Are the Basics of Military Time?

Military time runs on a single, continuous 24-hour count instead of resetting at noon and midnight like the 12-hour clock. The day begins at 0000 (12:00 AM) and ends at 2359, one minute before midnight.

The core difference lies in how hours are represented and spoken. Military time drops the AM and PM distinction entirely and instead uses a four-digit number to signify the time: the first two digits represent the hour (00–23), and the last two represent the minutes (00–59). For instance, straightforward times such as 5 AM or 5 PM become 0500 and 1700 hours, respectively, when converted to military time.

A helpful rule when learning military time: for any hour before 10 AM, add a leading zero to the hour (9 AM becomes 0900). Once you move past 12:00 PM (noon), you add 12 to the standard hour to get the military hour—for example, 3:00 PM under the 12-hour clock becomes 1500 hours in military time.

To refine these basics, practice converting standard times to military time and back again. Visualization can be an effective method here. Use a clock face or create a timeline to chart the conversion process for various times of day.

How Do You Convert Standard Time to Military Time?

Converting between the two systems comes down to a handful of consistent rules, depending on whether you're starting in the morning or afternoon/evening.

Converting AM hours (standard to military):

• 12:00 AM (midnight) becomes 0000.
• 1:00 AM through 9:59 AM simply gets a leading zero added (6:15 AM becomes 0615).
• 10:00 AM and 11:59 AM need no leading zero (10:30 AM becomes 1030).

Converting PM hours (standard to military):

• 12:00 PM (noon) becomes 1200.
• 1:00 PM through 11:59 PM gets 12 added to the hour (4:45 PM becomes 1645).

Converting military time back to standard time:

• For hours 0000–1159, the military and standard hour numbers match (drop the leading zero and add "AM").
• For hours 1300–2359, subtract 12 from the hour to get the standard PM hour (1930 becomes 7:30 PM).
• 1200 stays 12:00 PM (noon).

A common mistake is assuming 12:00 PM (noon) converts to 2400 — it doesn't. Noon is always 1200. Another frequent error is dropping the leading zero on morning hours, which creates ambiguous three-digit times like "900" instead of the correct "0900."

How Do Minutes Work in Military Time?

Minutes in military time don't change value at all—only the format changes. The time 1:45 AM simply becomes 0145, and 12:30 AM becomes 0030, with the minute values carrying over exactly as they appear on a standard clock.

Military time also drops the colon that separates hours and minutes in civilian 24-hour formats (like 14:30). Instead, it's written as a single, unbroken four-digit string: 1430. This is a deliberate choice for clarity in written logs, radio communication, and official documentation, where a missing or smudged colon could cause confusion.

Two of the most common mistakes involve the start and end of the day:

• 0000 vs. 2400: Both represent midnight, but 0000 is the standard way to denote the start of a new day, while 2400 is sometimes used on schedules to mark the literal end of the current day. They are not interchangeable in formal use—stick with 0000 unless you're specifically closing out a day's log.
• Writing "0000" as "0024" or vice versa: These are not the same time. 0024 is 12:24 AM, twenty-four minutes after midnight—not midnight itself.

How Do You Say Military Time Out Loud?

Military time is spoken by reading the digits in pairs rather than as a single number, and the word "hundred" typically replaces the colon when there are no minutes involved. For example, 0600 is spoken as "zero-six-hundred" or "oh-six-hundred," and 1800 is spoken as "eighteen hundred."

When minutes are involved, "hundred" is dropped. The time 1430 is spoken as "fourteen thirty," not "fourteen hundred thirty," and 0630 is "zero-six-thirty" or "oh-six-thirty." The word "hours" is optional and tends to appear in more formal military communication—for example, "zero-six-hundred hours" versus the more casual "zero-six-hundred."

Times with a zero in the minutes position, like 0030, are typically spoken digit by digit: "zero-zero-thirty" (also heard as "oh-oh-thirty"). And 0000 is commonly spoken as "zero hundred" or "zero hundred hours."

Pronunciation conventions can vary slightly by branch and even by unit, though the underlying 24-hour system (no colon, leading zeros, 0000–2359) is universal across the U.S. armed forces. In practice, Army and Marine Corps personnel commonly use "oh-six-hundred hours" in formal settings and "oh-six-hundred" casually, while Navy communications also lean toward including "hours" in formal contexts. The Air Force frequently uses Zulu time for flight operations, spoken as individual digits followed by "Zulu" (0600Z becomes "zero-six-zero-zero Zulu").

What Is Zulu Time?

Zulu time refers to Coordinated Universal Time (UTC), denoted by the letter "Z," and serves as a universal time reference used in military and aviation to coordinate across time zones. Because Zulu time doesn't shift for daylight saving time, local time conversions change seasonally even though the Zulu reference stays fixed—for example, 1200Z converts to 7:00 AM Eastern Standard Time but 8:00 AM Eastern Daylight Time.

Step 2: How Do You Build a Military Time Conversion Strategy?

A reliable conversion strategy comes down to understanding the core principles above and pairing them with memory aids that stick. The goal is to move from calculating each conversion manually to recognizing times instantly.

Start with the anchor points: midnight is 0000, noon is 1200, and every PM hour after that adds 12 to the standard clock hour. From there, build out mnemonic devices that reinforce the pattern. A few that learners find useful:

• Subtract 12 for PM: For any military time from 1300–2359, subtracting 12 instantly gives you the standard PM hour.
• "Ate" for Eight: The word "ate" sounds like the numeral "8," acting as a quick memory trigger when converting hours involving eight.
• "Eleven at Eleven" or "Noon and Midnight Bookends": Associating 1100 with 11:00 AM, and remembering that 1200 is noon while 0000 is midnight, helps anchor the two ends of the day.

These mnemonics work the same way a math acronym like PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction) helps students remember the order of operations—they're memory shortcuts, not strict rules, so use whichever pattern clicks for you.

Step 3: How Do You Practice and Reinforce Military Time?

With the fundamentals and a conversion strategy in place, the final step is practical application and ongoing reinforcement. Consistent, low-effort practice is what turns military time from a calculation into second nature.

Start integrating military time into your daily life. A few effective methods:

• Set your phone, computer, or digital watch to display time in 24-hour format.
• Create flashcards pairing standard and military times, and quiz yourself or a friend regularly.
• Read event logs, flight schedules, or shift timetables that use military time, and practice converting them on the fly.
• Challenge yourself with time "math"—adding or subtracting hours and minutes directly in military format.

If you have a relative, friend, or colleague in the military, aviation, or healthcare fields, practice using military time in casual conversation with them. Watching news briefings or event schedules that reference military time is another low-pressure way to build familiarity.

Once you're comfortable with basic conversions, it's worth exploring more advanced scenarios, such as reading Zulu time references in aviation contexts or working through multi-step time math across a 24-hour log.

Mastering military time is a practical skill that can open doors in healthcare, aviation, emergency services, logistics, and military-adjacent careers. By understanding the core format, building a conversion strategy, and reinforcing it through regular practice, you can confidently read and speak military time. As with most skills, consistent practice is what makes it second nature, so look at your watch differently now.

Frequently Asked Questions

What is 1800 in military time?
1800 in military time is 6:00 PM. It's spoken as "eighteen hundred."

Is it 2400 or 0000?
Both represent midnight and are numerically equivalent, but 0000 is the standard way to denote the start of a new day. 2400 is occasionally used on schedules or logs to mark the literal end of the current day.

How do you say 0030?
0030 is spoken as "zero-zero-thirty" (also heard as "oh-oh-thirty"). It represents 12:30 AM.

Do you say "hundred" or "hours"?
"Hundred" is used when there are no minutes in the time, such as "eighteen hundred" for 1800. "Hours" is optional and typically added in more formal communication, as in "eighteen hundred hours."

Why doesn't military time use a colon?
Military time omits the colon to create a single, unambiguous four-digit string that's harder to misread in radio communication, handwritten logs, or printed schedules. Civilian 24-hour formats, by contrast, often keep the colon (for example, 14:30).

Updated October 2026