Checking folder sizes on your Windows 10 PC is a key step for managing storage—whether you're clearing space, backing up to a USB drive, or uploading to cloud services like OneDrive or Google Drive. As a longtime Windows user, I've relied on these methods countless times to get accurate insights quickly.
Here are four proven approaches to view folder sizes seamlessly. I've tested them across various setups for reliability.
This is the simplest built-in method in File Explorer, though it has limitations for very large folders.
Simply hover your mouse pointer over any folder, and a tooltip will display the size, creation date, and item count. Note: It may not show sizes accurately for folders exceeding a few hundred GB—switch to other methods for those.
For the most detailed info—including size in GB/bytes, file count, and more—this is the go-to option used by pros for renaming, sharing, and security tweaks.
Step 1: Open File Explorer.
Step 2: Locate your folder.
Step 3: Right-click it and select Properties.
The Properties dialog shows exact size, attributes, and timestamps. Explore tabs for sharing, security, previous versions, or customizing the icon.
Make sizes visible on hover permanently via a quick settings tweak.
Step 1: Press Windows key, search for "File Explorer Options," and hit Enter.
Step 2: Switch to the View tab.
Step 3: Check Display file size information in folder tips and click OK.
For in-depth scans of entire drives or folders, third-party apps shine. TreeSize Free from JAM Software is my top pick—it's ad-free, precise, and visualizes space usage with pie charts.
Step 1: Download TreeSize Free from the official site.
Step 2: Install and integrate it into the context menu.
Step 3: Right-click any folder and select TreeSize Free.
Get breakdowns by subfolder/file, percentages, and counts—perfect for cleanup.
Stand out cluttered folders with custom icons—a handy trick for organization.
Step 1: Right-click the folder and select Properties.
Step 2: Go to Customize tab.
Step 3: Click Change Icon.
Step 4: Pick an icon and confirm.
These methods cover every scenario—from quick checks to advanced analysis. Start with Properties for most needs; scale to TreeSize for power users. Which will you use? Share in the comments!
Related: Struggling with Windows 10 headphone detection? Check our guide to fix headset issues.
