Folder Size Explorer is a free Windows utility designed to solve a classic Windows limitation: native File Explorer does not show folder sizes in the details view. It acts as a lightweight Windows Explorer clone that automatically calculates and displays the total size of your folders as you browse them. Key Features
Progressive Folder Sizing: It uses a very fast, multi-threaded calculation engine to compute folder sizes on the fly without locking up your system. You can easily skip or cancel a heavy folder mid-scan.
File Checksum Calculations: Unlike standard File Explorer, it can automatically compute hash values like MD5, SHA-1, SHA-256, and SHA-512 for all your files as they are displayed.
Data Exporting: You can export your current files and folder listings straight into a CSV or XML file, which is highly useful for archiving or opening in Microsoft Excel.
Storage Summary Pane: It provides a summary pane that categorizes your storage by file extension type or by dates (day, month, and year) to help you track down old data.
Automatic Column Resizing: The tool auto-fits column widths as you browse, ensuring your data never cuts off. System Compatibility
The application is highly lightweight and works on both 32-bit (x86) and 64-bit (x64) architectures. It natively supports Windows 10, 8, 7, Vista, and all variants of Windows Server from 2008 through 2019. You can download the tool directly from the Folder Size Explorer Official Website. Popular Alternatives
If you are looking to clean up disk space, you might also consider these widely used alternatives:
WizTree: Extremely fast disk analyzer that leverages the master file table (MFT) to show file hierarchies instantly.
TreeSize Free: A highly popular utility available right in the Microsoft Store that visually maps folder sizes.
WinDirStat: A classic, open-source storage visualizer that uses a color-coded treemap to represent large files.
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