有时您需要释放一些存储空间(storage space)，或者您想了解每个已安装的应用程序正在使用多少空间。如果您正在查找此信息，则没有明显的方法可以找到它。您可能很想搜索有助于完成此任务的程序，但没有必要这样做。Windows有自己的方式告诉您这些信息。以下是了解每个已安装应用程序使用多少空间的四种方法：
注意：(NOTE: )本指南涵盖Windows 10、Windows 7 和Windows 8.1。有些方法适用于所有三个版本的Windows，有些方法只适用于一两个版本。对于每种方法，我们都会告诉您它适用的Windows 版本。(Windows version)如果您不知道您拥有的Windows版本，请阅读本教程：我安装了哪个版本的Windows ？。
1. 使用“设置”应用(Settings app)了解您的应用占用了多少空间（仅限 Windows 10）
如果您使用的是Windows 10，并且想知道特定桌面程序或通用 Windows 平台应用程序(desktop program or Universal Windows Platform app)占用了多少空间，最简单的方法是通过“设置”(Settings )应用程序。首先打开“开始”菜单(Start Menu)并单击或点击“设置”(Settings)。您还可以使用此处描述的其他方法：在Windows 10中打开(Windows 10)设置(Settings)的 10 种方法。
在设置(Settings)应用程序中，单击或点按应用程序(Apps)。
在左侧边栏上，转到应用和功能(Apps & features)。
在窗口的右侧，滚动(window scroll)到名为Apps & features的部分。它包含您从Microsoft Store以及任何其他来源安装的所有桌面程序和现代Windows 应用程序的长列表。(Windows apps)
滚动(Scroll)直到找到您想知道它占用多少空间的桌面程序或Windows 应用程序。(Windows app)然后，查看其右侧显示的信息。在那里，您应该看到它的大小。例如，在下面的屏幕截图中，您可以看到 7-Zip 在我们的 PC 上占用了 4.93 MB 的空间。
只有一个缺点：某些应用程序不提供此信息，设置(Settings)应用程序无法告诉您这些应用程序占用了多少空间。对于此类应用程序，您可以使用本指南中的其他方法之一来估计它们的大小。
2.使用控制面板(Control Panel)（所有Windows版本）了解您的桌面应用程序(desktop apps)占用了多少空间
您应该首先查看的地方之一是控制面板中的“程序和功能”("Programs and Features")部分。
已安装程序（桌面应用程序）列表在右侧包含一个名为Size的列。(Size)如果看不到它，请将窗口最大化，以便有足够的空间显示。单击(Click)或点击大小(Size)列，您可以看到所有已安装的程序按大小排序。
当您选择一个程序时，在程序和功能(Programs and Features)窗口的底部有一个显示有关它的附加信息的区域。此信息还可能包括名为Size的字段。
但是，这种方法有一个缺点：Microsoft Store中的任何应用程序甚至不是所有桌面应用程序都在Programs and Features中提供此信息。对于此类应用程序，您可以使用其他方法之一来估计它们的大小。
3.使用文件资源管理器(File Explorer)（Windows 10和Windows 8.1）或Windows 资源管理器(Windows Explorer)（Windows 7）了解您的桌面应用程序(desktop apps)占用了多少空间
这种方法需要更多的工作，并且只适用于传统的桌面应用程序(desktop apps)。打开文件资源管理器(Open File Explorer)（在Windows 10和Windows 8.1中）或Windows 资源管理器(Windows Explorer)（在Windows 7中）。使用文件管理器(file manager)，导航到安装程序的文件夹。通常，这是Program Files或Program Files (x86)内的子文件夹。
右键单击或点击并按住(tap and hold)它，然后选择Properties。或者，您可以选择文件夹并按(folder and press) 键盘上的Alt + Enter所选文件夹的“属性(Properties)”窗口打开。
在General选项卡中，查找Size和Size on disk条目。它们向您显示该应用程序占用的空间。
这种方法有一个缺点：它不能帮助您查看应用程序占用的确切空间。你只看到它的安装文件夹(installation folder)的大小。某些应用程序可能具有存储数据的特定用户文件夹。它们与其安装文件夹(installation folder)分开，并且对于某些应用程序，它们可能比安装文件夹(installation folder)大。
4.使用 PC设置屏幕了解从(Settings screen)Microsoft Store安装的应用程序占用了多少空间（仅限 Windows 8.1）
您在Windows 8.1中从(Windows 8.1)Microsoft Store安装的通用应用程序不会显示在“控制面板”的“(Control Panel)程序和功能(Programs and Features)”部分中。此外，如果不获得它们的所有权并经历不必要的复杂化，您将无法访问它们的安装文件夹。幸运的是，Windows 8.1 提供了一种精确的方法来查找每个已安装应用程序的大小。
首先，转到PC 设置(PC Settings)。如果您不知道如何操作，请阅读本指南：在Windows 8.1中(Windows 8.1)访问 PC(access PC)设置的(Settings)六种(Six)方法。然后，在左侧边栏(left sidebar)上，转到PC and devices -> Disk space。在屏幕右侧的“应用程序(Apps)”部分，单击或点击“查看我的应用程序大小”。("See my app sizes.")
然后，Windows 8.1 会显示一个列表，其中包含您从Microsoft Store(Microsoft Store)安装的所有应用程序，按大小排序。
为什么您想知道一个应用程序在您的 Windows PC 上占用了多少空间？
是不是因为您需要腾出一些空间并想知道哪些应用程序更大？无论如何(Regardless)，既然您知道每个应用程序占用了多少空间，您可能会决定清理一些您不经常使用但需要大量存储空间(storage space)的应用程序。如果您知道了解已安装应用程序使用空间的其他方法，请不要犹豫，在下面的评论部分中分享它们。
4 ways to find out how much space your apps are using, in Windows (all versions)
There are times when you need to freе up some storage space, or you want to find out how much space each installed app is using. Іf you аre looking for this information, there are no obvious wayѕ to find it. You might be tempted to search for prоgrams thаt help with this task, but there is no need for that. Windows has its ways to tell you this information. Here are four ways tо learn how much space eaсh of your installed applications is using:
NOTE: This guide covers Windows 10, Windows 7, and Windows 8.1. Some methods work in all three versions of Windows, others just in one or two. For each method, we tell you the Windows version in which it works. If you do not know the version of Windows that you have, read this tutorial: What version of Windows do I have installed?.
1. Find out how much space your apps are taking, by using the Settings app (Windows 10 only)
If you are using Windows 10 and you want to know how much space a particular desktop program or Universal Windows Platform app is occupying, the easiest way to do it is through the Settings app. Start by opening the Start Menu and clicking or tapping Settings. You can also use other methods that are described here: 10 ways to open Settings in Windows 10.
In the Settings app, click or tap Apps.
On the left sidebar, go to Apps & features.
On the right side of the window scroll to the section called Apps & features. It contains a long list of all the desktop programs and modern Windows apps that you have installed from the Microsoft Store, but also from any other sources.
Scroll until you find the desktop program or the Windows app for which you want to know how much space it takes. Then, look at the information displayed on its right side. There, you should see its size. For example, in the screenshot below, you can see that 7-Zip takes 4.93 MB of space on our PC.
There is only one downside: some apps do not provide this information and the Settings app cannot tell you how much space those apps occupy. For such apps, you can estimate their size using one of the other methods in this guide.
2. Find out how much space your desktop apps are taking, by using the Control Panel (all Windows versions)
One of the first places where you should look is the "Programs and Features" section from the Control Panel.
The list of installed programs (desktop apps) includes a column named Size, on the right. If you cannot see it, maximize the window so that it has enough room to be displayed. Click or tap the Size column, and you can see all the installed programs sorted by their size.
When you select a program, on the bottom of the Programs and Features window there is an area displaying additional information about it. This information may also include a field named Size.
There is one downside to this method though: none of the apps from the Microsoft Store and not even all the desktop applications provide this information in Programs and Features. For such apps, you can estimate their size using one of the other methods.
3. Find out how much space your desktop apps are taking, by using the File Explorer (Windows 10 and Windows 8.1) or the Windows Explorer (Windows 7)
This method requires a bit more work and only works for traditional desktop apps. Open File Explorer (in Windows 10 and Windows 8.1), or the Windows Explorer (in Windows 7). Using your file manager, navigate to the folder where the program is installed. Usually, this is a subfolder inside Program Files or Program Files (x86).
Right-click or tap and hold on it and select Properties. Alternatively, you can select the folder and press Alt + Enter on your keyboard. The Properties window opens for the selected folder.
In the General tab, look for the Size and Size on disk entries. They show you the space occupied by that application.
There is one downside to this method: it does not help you see the exact space occupied by an app. You only see the size of its installation folder. Some applications may have specific user folders where they store data. They are separate from their installation folder and, for some applications, they can be larger than the installation folder.
4. Find out how much space the apps installed from the Microsoft Store are taking, by using the PC Settings screen (Windows 8.1 only)
The universal apps that you have installed from the Microsoft Store in Windows 8.1 do not show up in the Programs and Features section from the Control Panel. Also, you cannot access their installation folders without taking ownership of them and going through unnecessary complications. Luckily, Windows 8.1 offers an exact way of finding the size of each installed app.
First, go to PC Settings. If you do not know how, read this guide: Six ways to access PC Settings in Windows 8.1. Then, on the left sidebar, go to PC and devices -> Disk space. On the right side of the screen, in the Apps section, click or tap "See my app sizes."
Windows 8.1 then displays a list with all the apps that you installed from the Microsoft Store, ordered by their size.
Why did you want to know how much space an app is occupying on your Windows PC?
Was it because you needed to free up some space and wanted to know which apps are larger? Regardless, now that you know how much space each app is taking, you might decide to clean up some of those you do not use often but need a lot of storage space. If you know other methods for learning the space used by your installed apps, do not hesitate to share them in the comments section below.
