Set 12-hour Clock in Windows 11/10 [Easy Guide]

The clock displayed on your Windows computer is something you probably look at dozens of times every day. Whether you’re checking the time before a meeting, tracking work hours, or setting reminders, having the clock displayed in your preferred format makes using your PC much more comfortable.

By default, Windows supports both the 24-hour clock and the 12-hour clock formats. While many countries commonly use the 24-hour format, plenty of users prefer the familiar 12-hour format with AM and PM because it’s easier to read at a glance.

In this guide, you’ll learn exactly how to switch your Windows PC to the 12-hour clock format.

Table of Contents

Set 12-hour Clock in Windows 11/10 [Easy Steps]

Changing the time format simply tells Windows how it should display the current time across the operating system. Once you switch to the 12-hour format, the taskbar clock, Calendar app, File Explorer timestamps, and many Windows applications will begin showing the time using AM and PM instead of the 24-hour format.

The process is safe, reversible, and does not affect your actual time, date, or time zone. You’re only changing how the time appears on your screen.

Let’s go through each step in detail.

Step 1: Open the Windows Settings App

The first thing you need to do is open the Settings application, where Windows stores most personalization and system preferences.

If you’re using Windows 11, click the Start button on the taskbar and select Settings. The icon looks like a small gear.

Another faster method is pressing Windows + I on your keyboard. This keyboard shortcut instantly opens the Settings window from anywhere in Windows.

If you’re using Windows 10, the process is almost identical. Click the Start button, choose Settings, or press Windows + I.

Once Settings opens, you’ll see various categories like System, Bluetooth & devices, Network & internet, and Personalization.

Step 2: Navigate to the Date and Time Settings

After opening Settings, you’ll need to find the section responsible for your computer’s clock.

In Windows 11, click Time & Language from the left navigation pane. Then select Date & time.

In Windows 10, choose Time & Language, then click Date & time from the left side.

This page controls important features such as your current date, time, time zone, automatic clock synchronization, and regional settings.

You’ll notice options like Set time automatically, Set time zone automatically, and Adjust for daylight saving time automatically.

Take your time and carefully read each option before moving to the next step.

Step 3: Open the Regional Formatting Options

Windows uses your regional settings to determine how dates, currencies, numbers, and times appear throughout the operating system.

Scroll down until you find Language & region in Windows 11 or Region in Windows 10.

Open this section to view your current Regional format.

If you use a region that traditionally displays time in the 24-hour format, Windows may automatically use that style. Fortunately, you can customize the time format without changing your country or language.

Look for the option labeled Regional format and then click Change formats.

This section allows you to customize several display formats, including:

Short time
Long time
Short date
Long date

These formatting options only affect how information appears on your computer..

Step 4: Change the Short Time Format to 12-hour

This is the most important step.

Locate the Short time drop-down menu.

You’ll probably see one of these examples:

14:30
16:45
18:15

These examples indicate that Windows is currently using the 24-hour clock.

Click the drop-down menu and choose a format that includes tt, which represents AM and PM.

For example, you may see:

9:30 AM
3:45 PM
11:15 AM

As soon as you select one of these options, Windows immediately changes the time displayed in the taskbar and many other areas of the operating system.

There’s no Save button because Windows applies the new format automatically.

If you look at the bottom right corner of your desktop, you’ll usually notice the change instantly.

Step 5: Change the Long Time Format

Although changing the Short time format is usually enough, it’s a good idea to update the Long time format as well.

The long-time format is used by certain applications, system dialogs, and advanced Windows features.

Locate the long-time drop-down menu.

Select a version that displays the time using AM or PM.

For example:

9:30:15 AM
4:05:48 PM

This keeps every part of Windows consistent.

If you only update the short format while leaving the long format unchanged, some apps may still display the time using the 24-hour clock.

Making both formats match provides a cleaner and more consistent Windows experience.

Step 6: Confirm the Clock Has Changed

After updating both time formats, it’s time to verify that everything worked correctly.

Look at the clock in the bottom right corner of your desktop.

If the current time is after noon, you should now see PM displayed.

If it’s before noon, you’ll see AM.

You can also click the clock to open the calendar panel.

Open File Explorer and view file timestamps.

Launch built-in applications like Clock or Calendar to confirm the new display format appears throughout Windows.

Most applications automatically follow the Windows system time format.

If you notice that a particular app still displays the 24-hour clock, that application may have its own independent time settings.

Use Control Panel if the settings don’t change

Occasionally, Windows may continue displaying the old time format due to regional configuration settings.

If this happens, the classic Control Panel offers another method.

Open the Control Panel by searching for it from the Start menu.
Select Clock and Region.
Next, choose Region.
Click the Formats tab.
Select Additional settings.
Open the Time tab.

Here you’ll find editable fields for Short time and Long time.

To use the 12-hour clock, enter:

For ‘Short time’, use h:mm tt
For ‘Long time’, use h:mm:ss tt

Click Apply, then click OK.

Finally, restart your computer if the taskbar clock doesn’t update immediately.

This method directly edits the Windows regional formatting rules and usually resolves any remaining display issues.

Restart Windows if Necessary

Most of the time, Windows updates the clock instantly.

However, if you still see the old format, simply restart your computer.

Restarting refreshes Windows Explorer, reloads system settings, and ensures every application begins using the updated regional format.

After restarting, check the taskbar clock again.

In nearly every case, the 12-hour format will now appear correctly.

Remember that changing the display format never affects the actual time stored by Windows. Your alarms, reminders, scheduled tasks, and internet time synchronization continue working exactly as before.

FAQs

Why is my Windows computer showing a 24-hour clock?

Your regional formatting settings are likely configured to use the 24-hour time format. Changing the Short time and Long time formats to versions that include AM and PM will switch your computer to the 12-hour clock.

Does changing to the 12-hour clock affect my time zone?

No. The time zone remains the same. Only the way the time is displayed changes.

Can I switch back to the 24-hour format later?

Yes. You can return to the same formatting settings at any time and select a 24-hour time format. Windows applies the change immediately.

Why do some apps still display the 24-hour format?

Some applications include their own time display settings and don’t always follow Windows system preferences. Check the application’s settings if you continue seeing the 24-hour clock.

Will changing the time format affect scheduled tasks or alarms?

No. Windows continues to use the same internal system time. Only the visual display changes, so alarms, reminders, backups, and scheduled tasks continue working normally.

Is the process the same in Windows 11 and Windows 10?

Yes. Both operating systems provide similar options for changing the clock format. The menu names may differ slightly, but the overall process is almost identical.

Can I change the clock format without administrator privileges?

In most cases, yes. Changing your personal regional format does not require administrator permission unless your organization has restricted system settings through workplace policies.

Summary

Switching to the 12-hour clock in Windows 11 or Windows 10 is one of the simplest personalization changes you can make. Whether you prefer seeing AM and PM or simply find the 12-hour format easier to read, Windows gives you complete control over how the time appears.

The easiest method is to open Settings, navigate to Time & language, access the Regional format options, and change both the Short time and Long time settings to formats that include AM and PM. If the new format doesn’t appear immediately, the classic Control Panel provides an alternative way to update the settings, and a quick restart usually completes the change.

Since this adjustment only changes the display format, your actual system time, time zone, alarms, scheduled tasks, and automatic time synchronization remain completely unaffected. Once configured, your preferred 12-hour clock will appear consistently across the Windows interface, making everyday time checks more familiar and convenient.

Set 12-hour Clock in Windows 11/10: Easy Step-by-Step Guide