Microsoft refuses to add this File Explorer feature, so the Files app stepped up

Files 4.0 app promotional images on an ASUS Zenbook laptop screen.
(Image credit: Ben Wilson | Windows Central)

The Files app has beaten Microsoft to the punch once again. The same app that added tabs to file management far before Windows 11's File Explorer has added a clever way to show folder sizes.

A recent update to Files adds a button in the size column to calculate the size of a folder. The solution is a clever compromise that adds a simple way to show folder sizes without eating up system resources by showing the sizes of all folders.

The same update adds some other handy features like the option to remove all tags from a file.

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Files is not the first third-party file management app to show folder sizes; OneCommander also has the option. But I enjoy following the development of Files. The app looks like what File Explorer should be. It also often adds features before Microsoft adds similar options to File Explorer.

Files App | $8.99 at Microsoft Store

Files App | $8.99 at Microsoft Store

This third-party file explorer has many features people have requested for years from the built-in File Explorer on Windows. It has tabs, a column view, a file preview, and a customizable interface.

Why doesn't File Explorer show folder sizes?

If you browse around File Explorer, you'll notice folders have a blank space next to them under the size column. To calculate the size of a folder, Windows needs to perform a recursive scan and add together the size of every file within a folder.

A recursive scan would not be an issue for a reasonably sized folder, but if you have a folder with thousands of files and subfolders, the scan would eat up system resources and slow things down.

As a quick side note, File Explorer does show the size of zipped folders, but that's because Windows 11 treats those as individual files, not as folders.

There are ways to make File Explorer show folder sizes, but they require mods. Windows Forum has an excellent piece detailing the process of using Windhawk to show folder sizes in File Explorer.

If you'd like a gauge of how long a recursive scan for a folder takes, hover your mouse over any folder and wait until a file size appears. It may only take a moment for a single folder, but if your PC had to do a similar scan for any folder on your screen, it would not be a smooth experience.

Files takes a different approach to showing the size of a folder by adding a prompt within the size column. I think it's more user friendly and is a clever compromise to showing folder sizes.


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Sean Endicott
News Writer and apps editor

Sean Endicott is a news writer and apps editor for Windows Central with 11+ years of experience. A Nottingham Trent journalism graduate, Sean has covered the industry’s arc from the Lumia era to the launch of Windows 11 and generative AI. Having started at Thrifter, he uses his expertise in price tracking to help readers find genuine hardware value.

Beyond tech news, Sean is a UK sports media pioneer. In 2017, he became one of the first to stream via smartphone and is an expert in AP Capture systems. A tech-forward coach, he was named 2024 BAFA Youth Coach of the Year. He is focused on using technology—from AI to Clipchamp—to gain a practical edge.

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