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Military Time Converter: 24-Hour to 12-Hour Clock

This free military time converter changes between the 24-hour clock and the 12-hour AM/PM clock. It also shows how military time is spoken, for example 1730 is seventeen thirty hours.

By Debmedia Technologies LLP · Kolkata, India · Updated

What Is It and When Do You Need It?

Military time is the 24-hour clock, written with four digits. The day runs from 0000 to 2359, so there is no AM or PM. Armed forces, hospitals, airlines, railways and emergency services use it, and many countries use it every day.

Type a time in either style and the tool shows it in the other, plus how to say it.

How to Use This Tool

  1. Type a time such as 1730, 17:30 or 5:30 pm.
  2. Press Convert.
  3. Read the 24-hour and 12-hour forms.
  4. Use the spoken form if you need to say it.

How the Calculation Works

For the 12-hour form: hours from 1 to 11 are AM before noon; 12 is noon (12 PM); hours 13 to 23 become 1 to 11 PM; 0 becomes 12 AM. For the 24-hour form: PM hours below 12 get 12 added, and 12 AM becomes 0.

Worked Example

0000 is 12:00 AM (midnight). 1200 is 12:00 PM (noon). 1530 is 3:30 PM. 2145 is 9:45 PM. 5:05 am is 0505.

Common Uses

  • Reading schedules and tickets.
  • Hospital and military work.
  • Aviation and travel.
  • Programming and logs.

Tips and Common Mistakes

  • Four digits without a colon are treated as military time.
  • Minutes are always two digits.
  • Midnight can be written 0000 or 2400.

Next, you may need the time zone converter, time card calculator, decimal hours converter, time duration calculator.

Everything runs in your browser. Nothing you type is uploaded, stored or sent to any outside service.

Frequently Asked Questions

Up to 12:59, the time is the same, with AM before noon and PM after. From 13:00, subtract 12 and write PM. So 1730 is 5:30 PM.
0000 is midnight at the start of a day, shown as 12:00 AM. 2400 is used for the end of a day and means the same moment as 0000 of the next day.
Say the hours as two digits, then the minutes, then "hundred" or "hours": 0800 is "zero eight hundred" and 1530 is "fifteen thirty".
It avoids the AM and PM confusion, so there is only one way to write each moment of the day.

Disclaimer: results are calculated in your browser from the numbers you enter. Check important results before you rely on them for money, health, safety or legal decisions.