12 Hour to 24 Hour Time Converter

About the 12 Hour to 24 Hour Time Converter

The 12 Hour to 24 Hour Time Converter is a useful tool that transforms time from the 12-hour format to the 24-hour format, also known as military time. This conversion is essential for various applications, including international communications, scheduling, and time-sensitive operations.

What is 12 Hour to 24 Hour Time Conversion?

12 Hour to 24 Hour time conversion is the process of changing a time expressed in the 12-hour clock system (with AM/PM) to its equivalent in the 24-hour clock system. For example, "2:30 PM" in 12-hour format would be converted to "14:30" in 24-hour format.

Formula for Converting 12 Hour to 24 Hour Time

The conversion follows these rules:

\[ 24HourTime = \begin{cases} 12HourTime & \text{if AM and 12HourTime ≠ 12:00} \\ 12HourTime + 12:00 & \text{if PM and 12HourTime ≠ 12:00} \\ 00:00 & \text{if AM and 12HourTime = 12:00} \\ 12:00 & \text{if PM and 12HourTime = 12:00} \end{cases} \]

Where:

  • \(24HourTime\) is the resulting time in 24-hour format
  • \(12HourTime\) is the input time in 12-hour format

Conversion Steps

  1. Identify if the time is AM or PM.
  2. If AM and not 12:00, keep the hours the same.
  3. If PM and not 12:00, add 12 to the hours.
  4. If 12:00 AM, convert to 00:00.
  5. If 12:00 PM, keep as 12:00.
  6. Keep the minutes the same in all cases.

Example

Let's convert 3:45 PM to 24-hour format:

\[3:45 \text{ PM} \rightarrow 15:45\]
12 1 2 3 4 5 6 7 8 9 10 11 00 13 14 15 16 17 18 19 20 21 22 23 3:45 PM 15:45