Simple Trick How to Convert 0400 Hours Military Time

What time is 0400 military time?

Do you know what time 0400 Military Time is? I know that converting Military Time can be a bit complicated, but not when you know the simple and helpful formula. In case you only want to know what 0400 hours military time means, here you have a short, but useful answer:

0400 Hours Military Time (24-Hour time format) is equivalent to 4:00 AM in Normal Time or Standard Time (12-Hour time format). 0400 Military Time is read as “zero four hundred hours“, and it is written without a colon between the hours and minutes.

For those of you who are interested in a simple conversion formula, continue reading and find below the formula that helps you understand the conversion of 0400 Military Time.

What does 0400 Military Time mean?

First of all, it is important to know the basics of Military Time. Military Time always contains 4 digits where the first 2 digits are for hours and the second 2 digits are for minutes.

This simple image below explains to you the basic rule of conversion:

Military Time Conversion to Standard Time Explanation
Military Time Conversion to Standard Time Explanation

In addition, if you have a Military Time greater or equal than 13:00, you have to subtract 12 hours from the given time. And that’s all you need to know.

0400 Hours Military Time Conversion Guide

Now, let’s move on to explaining the simplest way of how you can convert 0400 Hours into Standard Time.

Before you start, look at this classic analog clock that shows the time you want to convert. It helps you understand the whole process of 0400 Military Time Conversion:

0400 Hours Military Time on the Analog Clock
0400 Hours Military Time on the Analog Clock

And now let’s move on the conversion process itself:

Divide the given time

First, divide the given time to hours and minutes. For 0400 Military Time, it is 4 hours and 00 minutes.

Greater than 1300 or not?

Then pay attention to whether the given time is greater than 1300 or not. 0400 isn’t greater than 1300 so you don’t use the subtraction rule for the hours and let the number for hours as it is: 4 hours.

Convert Minutes

Minutes are the same in the Military Time as so as in the Standard Time, so 00 minutes is still 00 minutes.

Add the colon

Add the colon between calculated hours and minutes and the result will be 4:00.

Is it AM or PM?

0400 is not greater than 1200 so according to about mentioned rule add AM after calculated time so the result will be 4:00 AM normal time.

Correct Answer

So what time is 0400 Military Time? The correct answer is 4:00 AM standard time (12-hour time format).

TIP: If you want to see more conversions check out other articles about specific military time conversions.

Or if you feel like you know to convert any given Military Time, you can try to take some of these Quizzes and see how you are doing!

All Quizzes on Military Time: Can you get score 10/10?

How to Read and Write 0400 Military Time?

You already know how to convert 0400 Hours and now it’s time to learn how to read and write this specific time.

This table explains everything you need to know about reading and writing 0400 Hours Time and related times:

Standard Clock How to Write Military Clock How to Read Military Clock
4:00 AM 0400 Hours zero four hundred hours
4:15 AM 0415 Hours zero four fifteen hours
4:30 AM 0430 Hours zero four thirty hours
4:45 AM 0445 Hours zero four fourty five hours

I hope you found this table above useful and you understand how to write and say 0400 hours and related times now. In case you are still confused, don’t worry, I have a great tip for you.

TIP: Learn how to read Military Time for other hours in this post:

How to Read Military Time? Simple Explanation with Examples

FAQ about 0400 Military Time

Still didn’t see what you were looking for? These frequently asked questions can provide you with any additional information.

How to say 0400 in military time?

0400 in Military Time is said as Zero four hundred (hours). You may say hours after a given time but it is not necessary.

Is 0400 military time AM or PM?

0400 is AM in standard time (12-hour time format). All times in military time format (24-hour time format) less than 1200 belong to AM hours.

What is 4 AM in military time?

4 AM standard time (12-hour time format) is equal to 0400 military time (24-hour time format).

What is 0400 AM military time?

In military time format, we don’t use AM or PM to tell the time. The correct question should be: What is 0400 military time? Or: Does 0400 military time mean AM? Anyway, 0400 military means AM in standard time and it is exactly 4:00 AM.


I hope 0400 Military Time (0400 Hours) conversion was not a difficult task for you, but the clarification of AM and PM is an important reminder:

  • When the value of Military Time is greater than 1200 it will be PM
  • When the value of Military Time is less than 1200 it will be AM
  • 2400 (0000) is an exceptional case because it is considered as AM (12:00 AM)

If it is still confusing for you, you can read the post on Military Time Charts where you find a conversion chart for all hours of the day. Or you can visit the post with Military Time Converter, where you can find an explanation on how to use this converter and convert any time you want.

TIP: This website contains much more topics related to Military Time so you can also check the main categories with all useful posts:

Military Time Tools

About Military Time

Military Time Conversions


My name is John, I’m the founder of this website – Ultimate Source about Military Time. I post everything related to Military Time on this blog. I hope my posts help you to understand how Military Time works. I use Military Time (24-Hour Time Format) daily, no more confusion with time!

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