Folder Size Explorer is a simple and free Windows Explorer clone with the added ability to calculate folder sizes. Microsoft's built-in Windows Explorer does not calculate folder sizes which means you must select each folder individually and then click properties to determine its size. This can be very time consuming when you're trying to determine which folders on your drive are taking up all the available disk space. Folder Size Explorer calculates folder sizes progressively as you browse them and quickly allows you to see which directories are using up the most disk space. It can also be configured to calculate MD5, SHA1,SHA256 and SHA512 checksums for all files as they're displayed. It allows you to save file and folder lists to csv files for viewing in external applications like Excel and Notepad. Folder Size Explorer is compatible with 32 and 64-bit versions of Windows 10, 7, 8, Vista, XP, 2008, 2012 and 2016.
FSE features include:
- Show and calculate file and folder size columns in either KB, MB, GB or TB in Windows Explorer.
- Show and calculate MD5, SHA-1, SHA-256 and SHA-512 checksum values for all files in Windows Explorer.
- Export and save Windows Explorer file and folder lists to a csv file. Multiple delimiters available.
- Autofits Explorer column sizes as you browse and navigate your files.
- Simple and efficient search of your files and folders based on text, size, date etc.
- Summary pane showing breakdown of files by extension, day, month and year.
- Very fast multi-threaded folder sizing with the ability to skip or cancel any folder on the fly.
- Supports x86 and x64 bit versions of Windows 10, 8, 7 & all versions of Windows Server 2008 to 2019.
Publisher’s description
What is Folder Size Explorer?
Folder Size Explorer is a proprietary program for Windows from Bazwise.
Installation and requirements
Official installers exist for 32-bit as MSI. The main installer is 1.4 MB. The installer supports unattended (silent) installation.
Pros / Cons
Pros
- Documented silent install
- Small download (1.4 MB)
Cons
- Proprietary licence: check the terms and price
- No native ARM64 build
- 32-bit only
- No update for more than a year
In short: Folder Size Explorer is a Windows tool for 32-bit PCs. Updates have slowed down. Administrators can deploy it unattended.
Is Folder Size Explorer safe to download?
- The file is served by storage.googleapis.com; check that it is the publisher’s official mirror
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
6230B27830396E93AC074E4DB73A0A91335341A68A528614016C9CC3A864F5DF· Open the VirusTotal report for this hash - The link answered when we last checked it (October 22, 2026)
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 1 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 2.0.0Latest | March 4, 2018 | 1.4 MB | 32-bit ZIP |
Install from the command line
Silent install ›winget install --id Bazwise.FolderSizeExplorer -emsiexec /i FolderSizeExplorer-04-MAR-2018-V200.zip /qn /norestartmsiexec /x {CD453A88-D560-47A2-9D4D-414134F5A73D} /qn /norestartRelated guide: How to use winget: install and update apps
Information
- Publisher
- Bazwise
- Licence
- Proprietary
- Price
- See the publisher’s site
- Requires
- Windows 11 / 10
- Architecture
- 32-bit
- Installer
- MSI
- Version
- 2.0.0
- Released
- March 4, 2018
- Added to the catalogue
- December 18, 2023
- Versions listed
- 1
- Website
- folder-size-explorer.com
- winget ID
- Bazwise.FolderSizeExplorer
- MSI product code
- {CD453A88-D560-47A2-9D4D-414134F5A73D}
Ratings and reviews
No reviews yet. Be the first to rate it.
Frequently asked questions
Is Folder Size Explorer free?
Folder Size Explorer is proprietary (closed-source) software (licence: Proprietary). Whether it costs money depends on the edition: check the publisher’s site for prices and free tiers.
Is Folder Size Explorer safe to download?
The download comes from storage.googleapis.com; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install Folder Size Explorer with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can Folder Size Explorer be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does Folder Size Explorer run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 32-bit version through emulation.