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Switching your iPhone’s clock to military time, also known as the 24-hour format, is a straightforward process. This change can be particularly useful for professionals who use military time in their work or for anyone who prefers this time format for its clarity and lack of AM/PM ambiguity. Here’s a step-by-step guide to help you make this adjustment with ease.

Understanding Military Time

Before diving into the steps, it’s essential to grasp what military time is. Unlike the standard 12-hour clock, which divides the day into two periods (AM and PM), military time runs on a 24-hour cycle. Midnight starts at 00:00, and the hours continue through to 23:59, just before the next midnight. This format is widely used in various fields, including the military, aviation, and healthcare, for its precision and unambiguity.

Step 1: Accessing Settings

First things first, begin by unlocking your iPhone and navigating to the home screen. Here, you’ll find the ‘Settings’ app symbolized by a gear icon. Tap on this to open the Settings menu, the central hub for most of your iPhone’s configuration options.

Step 2: Navigating to General Settings

Once in Settings, scroll down until you find the ‘General’ option. This section houses various fundamental settings and preferences for your iPhone. Select ‘General’ to proceed to the next step.

Step 3: Locating Date & Time Settings

In the General settings, you will find an array of options. Scroll through these until you locate the ‘Date & Time’ option. This is where you can adjust time-related settings on your iPhone, including the time format.

Step 4: Enabling 24-Hour Time

Upon selecting ‘Date & Time’, you will be directed to a new screen with several time-related settings. Look for the ’24-Hour Time’ option. By default, this might be turned off. To switch to military time, toggle this option to the ‘On’ position. This action changes your iPhone’s time display to the 24-hour format.

Step 5: Confirmation

Once you’ve toggled the 24-Hour Time option, your iPhone will automatically update the clock format across the device. This includes the time displayed at the top of your screen and within the Clock application. There’s no need for a manual confirmation or additional steps; the change is instant and applies system-wide.

Adjusting to the New Format

It might take some time to get accustomed to reading time in the 24-hour format, especially if you’ve been using the 12-hour format for a long time. However, many find it simpler once they get used to not having to differentiate between AM and PM.

Switching Back

If you decide that military time isn’t for you, reversing the process is just as easy. Simply go back to the Date & Time settings and toggle off the 24-Hour Time option. Your iPhone will revert to the standard 12-hour format.


Changing your iPhone to military time is a quick and easy process that can simplify how you read and use time on your device. Whether for professional requirements or personal preference, the 24-hour format offers a clear and concise way to manage time.


  1. Will changing to military time affect my alarms and calendar events? No, your alarms and calendar events will remain as set. They will simply be displayed in the 24-hour format.
  2. Can I switch back to the 12-hour format easily? Yes, you can revert to the 12-hour format by simply toggling off the 24-Hour Time option in the Date & Time settings.
  3. Does this change affect all apps on my iPhone? Yes, this change applies system-wide, affecting all apps that use the time function on your iPhone.
  4. Is it possible to have a dual time format on the iPhone? No, the iPhone allows only one time format (either 12-hour or 24-hour) to be active at a time.
  5. Will this setting sync across my Apple devices? No, this setting is device-specific. You will need to change the time format individually on each of your Apple devices.
Eric Chan

Hi! I’m Eric and I work on the knowledge base at  You can see some of my writings about technology, cellphone repair, and computer repair here.

When I’m not writing about tech I’m playing with my dog or hanging out with my girlfriend.

Shoot me a message at if you want to see a topic discussed or have a correction on something I’ve written.

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