See every folder size in Windows at a glance. View largest-folder and largest-file reports, and free up disk space without the guesswork.
Folder Size Explorer lists the size of every folder and file on your system, so you can find your largest folders and largest files in seconds instead of hunting through Explorer manually. It also breaks down the size distribution in clear pie and bar charts.
It works on local drives (HDD/SSD), external drives, and network locations, and adds a "Scan with Folder Size" option straight to the Windows Explorer right-click menu. Folder sizes are calculated progressively as you browse, so you can see exactly which folders are eating up your storage as you go.
Folder Size Explorer is completely free.
Systems: Windows 11 / 10 / 8 / 7 / Windows Vista / All Windows Server Versions
Size: 4.81 Mb
Not having folder sizes in Windows Explorer is a real annoyance — here's how Folder Size Explorer fixes that.
Right-click any folder in Windows Explorer and choose "Scan with Folder Size" to see its size instantly. The scan is heavily optimized and lists file and folder sizes right away — including items that Windows Explorer normally can't access on its own.
Results are sorted automatically, so your largest files and folders show up first for quick cleanup. You'll also see file counts, sub-folder counts, and reports for the oldest, newest, and longest file paths.
Works well right out of the box, with advanced options available when you need them — filtering, exclusions, and export to XML or CSV. Display sizes in bytes, KB, MB, GB, or let the app choose automatically. Command-line parameters let you automate scans.
Pie and bar charts make it easy to see where your space is going at a glance. Click any chart segment to jump straight to that folder or file. Charts can also be exported.
Search your files and folders by name, size, date, and more. Set filters before running a scan to speed things up, and include or exclude items based on any property.
Delete files and folders directly from the app, or remove them from the list view without touching the actual files on disk. Locate any item in Windows Explorer with one click, or double-click to open it.
Our tools have been on the market for almost two decades and are used by more than 20 million people, including plenty of IT professionals. Download Folder Size Explorer and see why.
Windows Explorer is the core file manager built into Windows, but it's missing one feature most people eventually want: the ability to see folder sizes. It's a strange gap, considering how often you'd actually use it.
There's a reason for that gap, though — performance. Calculating a folder's size means scanning every file inside it, including sub-folders. If Explorer tried to do that constantly for every folder you opened, it would slow the whole system down. Useful as the feature is, Microsoft clearly decided it wasn't worth the tradeoff.
Folder Size Explorer fills that gap. It gives you a full list of folder and file sizes along with the details that matter, plus a breakdown of the largest items inside any folder and its sub-folders. Just right-click a folder in Windows Explorer and select "Scan with Folder Size."
You can sort by size, name, file count, sub-folder count, date, and other attributes, or use the folder tree view to navigate visually. Pie and bar charts make space hogs easy to spot — click any chart item to jump straight to that folder or file in the details view.
Automate scans with command-line parameters, save a folder's current state to a project file for later, or export everything to CSV or XML. You can even print a folder tree with sizes included — handy if you need a physical record. There's a lot you can do with it.
Download Folder Size Explorer and find out exactly where your disk space went — including hidden system folders like System Volume Information and backup directories that most tools skip over.
Folder Size Explorer is completely free and doesn't contain any third-party bundles. We release frequent updates, so Windows SmartScreen or Chrome may show a warning message until enough users have downloaded the latest version. Feel free to scan the file with multiple antivirus engines at virustotal.com before installing it — we guarantee it's completely safe.
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