Supports High DPI displays on Windows 10. Also runs on Windows 7.

Disk Space Analyzer that shows Folder & Sub Folder Size and other stats

High capacity lists for huge drives. Stop a long running scan anytime. See 7 such Remarkable Features below.

Locate large, space-hogging folders, files, file types, file owners, active folders for disk space clean up on Windows.
Easy settings to view in larger font, smart sizes, etc. Perfect for Windows Server Administrators and Advanced Users.

See next Feature Card, click on

The Trial has basic features, quickly installs and supports Windows 10 / 8 / 7.

What the users are saying about ShowSize

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  • "I searched on Google. Yours was the third one I downloaded and tried but the only one which really does what I was looking for. It's amazing that something so simple in concept was so hard to find, but I am very pleased with Showsize."
    David Lapish

  • "Your program is saving me a ton of time and the ownership information is invaluable to me! The latest version with that optional "owner" and "modified" columns are exactly what we needed! It's also very cool to work with a program that when you hit cancel on a long running operation with over 300,000 entries, that it actually works! The program is great!"
    William Devlin

  • "ShowSize is a real top-notch, well-written, and extremely useable utility. You did a great job on it! I use it quite frequently and the integration with Windows Explorer plus the various report views it gives make it that much more useful."
    George Lunsford

  • "ShowSize is a slick program and runs even faster than I would have thought it could -- it was a great help recently when I purchased a new system and realized how much data I accumulated since I switched."
    Neal Gresens

  • "I wish all vendors would respond as quickly and accurately as you have!"
    Andy Waszkiewicz

  • "Great program. A very worthy successor to that long-ago Windows version of XTree Pro (or whatever it was called) that I had a decade or more ago."
    Stephen DeLong

  • "Excellent program ... absolutely every option one could possibly think of!"
    Chris Goodliffe

  • "I just wanted to let you know what a great product Showsize is. I have been looking for this type of utility for months and finally came across your program. You have made my life so much easier as I now can produce the reports I need for users at our company."
    Scott Abel

  • "The moment I tried ShowSize, I knew it IS the software I was looking for. Now, as a LAN Admin, I can monitor the size of constantly changing network space."
    Lech Maziakowski

  • "This tool will prove invaluable for network administrators. Great job!"
    Steve Ikard

  • "There is no doubt that Showsize is a bargain! I have not been able to find another program at ANY price that does even half as much."
    Patrick Stallings

  • "I love it because it saves me so much time."
    CF Kwok

  • "I'm very pleased with this product. It has greatly enabled me to do traditional system maintenance on my computer."
    Philip South

Is your hard drive or cloud drive filling up fast? Do you wonder what is taking up all that disk space? ShowSize will help you find that information easily.

ShowSize displays 7 kinds of hierarchical and flat lists of files and folders that help you quickly find the most space consuming folders, files, file types and file owners.

For complete details on all the lists, please see the slides at the top of the Home page.

ShowSize is heavy-duty software

Modern disk drives are huge, running into terabytes of disk space and millions of folders and files. DO NOT USE "Toy programs" to analyze disk space on such huge disks. ShowSize is designed for heavy use with its features like virtual lists with huge capacity and Exclude Folders to save time on scanning.
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New, runs on Windows Server machines, Windows 10, Windows 8.1, Windows 7

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7 remarkable features that you may not find in other software

1 Huge Capacity and the ability to Stop a scan: Modern disk drives are huge. Finding folder sizes takes time as the software has to perform a deep scan. It is important that you should be able to cancel a long running scan in case you change your mind.

2 Save a Directory Listing: Save a directory listing to a file and later view it on any system. Easy to send and share with other admin users.

3 Exclude standard, big folders: Save your time by excluding standard big folders that you shouldn't clean up or that you don't want to analyze. For example, "C:\Windows."

4 Use a Flat List or Tree List as appropriate: ShowSize presents information in both Tree and Flat lists. A flat list might be more useful in certain cases. For example, how do you find the largest file on a disk? Use the flat list "Only Files" and sort on size so that the largest files come on top. You can not perform such analysis in a Tree List where the largest file might be deep inside a folder and a sort will not bring it to the top.

5 Use advanced filters: Apply advanced filters to find the information that you need. For example, show files greater than a certain size and modified between two given dates.

6 Display only significant items in charts: A Top Items Chart that shows only the most significant items to give you an uncluttered view of the largest items whether they are folders, file types, files or file owners.

7 Skip Deduplicated Folders: These are also known as Symbolic Links or Reparse Points. ShowSize has a setting to ignore Symbolic links which is same as ignoring Deduplicated folders. This gives you a more accurate disk space analysis as the deduplicated data is not scanned again.

The Features page has some more details and screenshots on the above 7 features.

The New ShowSize 6 has a ribbon menu that helps find a command easily. For complete details on the features, please see the Feature Cards at the top of the page.


Disk Space Analyzer for Windows 10

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