FolderSizes

FolderSizes is a Windows application for examining how files and folders use space across local and network storage. It scans local and external drives, mapped network drives, UNC paths and network shares, then displays results as treemap, sunburst, bar or pie charts. Search filters can narrow results by age, name, attributes, size, owner, date or depth-related criteria. Reports can be exported to Excel, PDF, HTML, CSV and XML. Recurring scans can generate automated email reports, while disk usage tracking and file system snapshots help show changes over time. The free edition has no time limit and includes four visualizations, reports, advanced search and scan filtering; the free trial has no feature limitations. A Personal Edition perpetual license costs $30, paid once and is restricted to personal and home network use, with use on up to two personal computers. A Single-User Pro license costs $60, paid once for one user and is described for servers, workstations and company networks. Pro upgrades include priority technical support and free minor version upgrades. FolderSizes has been continuously developed since 2003 by Key Metric Software, LLC.

FolderSizes combines multiple storage views with exportable reports, filtering and trend tracking. Its no-time-limit free edition provides core analysis tools, while license terms distinguish personal use from business and network use.

It suits Windows users who need to inspect storage across local or network locations and export reports. Personal Edition is restricted to personal and home network use; Pro licenses cover broader work settings.

FolderSizes is a Windows utility for examining how storage is used across drives and network locations. It suits home users who want a lasting free option and IT teams that need repeatable scans, reports, and trend tracking. The free edition covers core analysis without a time limit; organizational use calls for a Pro license.

Overview

FolderSizes, developed by Key Metric Software since 2003, pairs visual storage breakdowns with search and reporting tools. Its ability to scan external drives and network paths extends its reach beyond a single computer, while snapshots and recurring reports make it useful for ongoing oversight. If all you need is a quick look at one drive, that broader toolkit may be more than necessary.

Key features

Treemap, sunburst, bar, and pie charts give users several ways to see where space is concentrated. File-type breakdowns add context, and searches can be narrowed by age, name, attributes, size, owner, date, or depth-related criteria. That combination suits both a broad storage review and a more targeted file investigation.

FolderSizes scans local and external drives, mapped network drives, UNC paths, and network shares. Reports can be exported to Excel, PDF, HTML, CSV, or XML, and recurring scans can send automated email reports. File-system snapshots and trend analysis track changes in disk usage and folder sizes over time, which is valuable for teams monitoring storage rather than diagnosing a one-time problem.

The free edition has no time limit and includes four visualizations, reports, advanced search, and scan filtering. A feature-unlimited free trial lets prospective buyers evaluate the paid capabilities, but the free edition does not remove the licensing distinction between personal and organizational use. Pro upgrades also include priority technical support and free minor version upgrades.

Pricing

FolderSizes uses a freemium model, with paid licenses sold as one-time purchases rather than subscriptions. The free edition is the sensible starting point for home users who need its core analysis tools and can stay within personal-use terms.

• Personal Edition license — $30, paid once: A perpetual license for personal and home network use on up to two personal computers. It is unavailable to organizations and comes with lower-priority support, so it is not the right purchase for business use.
• Single-User Pro license — $60, paid once: A perpetual license for one user, suitable for servers, workstations, and company networks. This is the direct step up for an individual using FolderSizes at work.
• Single-User Pro 5 Pack — $210, paid once: A perpetual five-pack with a 30% discount, suited to a small group needing separate licenses.
• Single-User Pro 10 Pack — $360, paid once: A perpetual ten-pack with a 40% discount, which reduces the per-license cost for a larger team.
• Site-Wide Pro license — $700, paid once: Covers unlimited users and installations within a single location or city, a better fit than individual licenses when deployment is concentrated at one site.
• Country-Wide Pro license — $2,200, paid once: Covers unlimited users and installations within the purchaser’s country of origin, for broader domestic deployment.
• Enterprise-Wide Pro license — custom pricing: Covers unlimited users and installations globally within one organization.
• Single-Consultant Pro license — $499, paid once: Allows one consultant to use the software on up to five concurrent customer computers.
• Multi-Consultant Pro license — $1,399, paid once: Covers up to five consultants and 15 concurrent customer computers, extending the consultant option to a team.

License choice matters as much as price: the low-cost Personal Edition excludes organizations, while Pro licenses address individual business users, teams, sites, countries, and consultants. Buyers should match the license to both their user count and deployment scope.

Platforms

FolderSizes runs on Windows. Its scan support includes external drives as well as local and network storage, but the software is not offered for other desktop platforms.

Who it's for

FolderSizes is a strong fit for Windows users who need more than a basic space check: home users can start with the no-time-limit edition, while administrators and support teams can use network scans, exportable reports, and trends for recurring oversight. Consultants have licenses structured around concurrent customer computers. It is less suitable for Mac or Linux users, and organizations should not rely on the Personal Edition.

Pros and cons

• Pro: The free edition has no time limit and includes visualizations, reports, advanced search, and filtering, making it useful for sustained personal analysis without a subscription.
• Pro: Scans extend to mapped drives, UNC paths, and network shares, supporting work across shared storage as well as local disks.
• Pro: Multiple export formats, scheduled email reports, and trend tracking serve teams that need repeatable visibility into storage changes.
• Con: Windows-only availability rules it out for users seeking a native Mac or Linux option.
• Con: The cheapest paid license is restricted to personal and home network use, so organizational buyers need a higher-priced Pro tier.

Alternatives

For a wider comparison, browse Disk Space Analyzers.

• TreeSize is another Windows freemium option with a free plan and free trial; choose it if you want to compare a different Windows analyzer.
• WizTree offers a free plan on Windows and macOS; it may suit someone who needs a cross-platform option.
• SizeTrend is a Windows freemium alternative with a free tier for local analysis; consider it if local-drive and folder scans are the priority.
• Disk Analyzer Pro has a free personal edition for local-drive reports, unwanted-file deletion, and duplicate-file reports, making it an option for users focused on those tasks.
• StorageRadar is a macOS freemium option; choose it if you need a Mac-native alternative.
• Drive Atlas supports Windows and Linux, with a free tier covering the first two drives; it may fit users on either platform who can work within that drive limit.
• Disk Auditor is a free Windows tool with portable scanning and exports to CSV, TSV, JSON, Excel, and plain text; it may suit users who want a no-cost portable utility.
• DiskAtlas is a macOS alternative.

Verdict

Choose FolderSizes if you use Windows and want storage analysis that can scale from personal scans to scheduled reports and network-wide oversight. Its no-time-limit free edition makes it easy to start, and perpetual Pro licenses cover several organizational scopes. Look elsewhere if you need Mac or Linux support, or if a basic local-drive check is all you need.