Military Time Explained: How to Read and Convert 24-Hour Time
November 28, 20245 min read
Military time, also known as the 24-hour clock, is used by armed forces, aviation, healthcare, and many countries worldwide. This guide will teach you how to read, speak, and convert military time.
What is Military Time?
Military time is a timekeeping method that uses a 24-hour format instead of the 12-hour AM/PM system. The day starts at 0000 (midnight) and ends at 2359 (11:59 PM). There's no need for AM or PM designations.
Military Time Conversion Chart
| Military Time | Standard Time | How to Say It |
|---|---|---|
| 0000 | 12:00 AM | Zero Hundred |
| 0100 | 1:00 AM | Zero One Hundred |
| 0600 | 6:00 AM | Zero Six Hundred |
| 0900 | 9:00 AM | Zero Nine Hundred |
| 1200 | 12:00 PM | Twelve Hundred |
| 1300 | 1:00 PM | Thirteen Hundred |
| 1500 | 3:00 PM | Fifteen Hundred |
| 1800 | 6:00 PM | Eighteen Hundred |
| 2100 | 9:00 PM | Twenty-One Hundred |
| 2359 | 11:59 PM | Twenty-Three Fifty-Nine |
How to Convert Military Time
Converting FROM Military Time
- For times 0000-1159: The time is the same, just add AM. (0900 = 9:00 AM)
- For times 1200-2359: Subtract 1200 and add PM. (1500 - 1200 = 3:00 PM)
Converting TO Military Time
- AM times: Remove the colon and AM. (9:00 AM = 0900)
- PM times: Add 1200 to the hour. (3:00 PM = 1500)
- 12:00 AM (midnight): = 0000
- 12:00 PM (noon): = 1200
Why Use Military Time?
- No Confusion: Eliminates AM/PM errors
- Universal: Used internationally in aviation and military
- Precise: Critical for medical records and schedules
- Simple Math: Easy to calculate time differences
Who Uses Military Time?
- Armed Forces worldwide
- Aviation and air traffic control
- Hospitals and healthcare
- Emergency services (police, fire, EMS)
- Most countries outside the US
- Scientists and researchers
Quick Conversion Tip
For afternoon/evening times (PM), just add 12 to the hour.
Example: 4:30 PM → 4 + 12 = 16, so it's 1630