TreeSize Free — The Complete Guide: See What Fills Your Disk, Right From Explorer
TreeSize Free is a Windows tool that scans a drive or folder and shows the size of every subfolder. You launch it with a right-click in File Explorer, so you can quickly find where large project files, old backups and simulation results have accumulated.
TreeSize Free
JAM Software
Shows which folders take up disk space, right from the Explorer menu — for private, non-commercial use only.
Get it from the vendorWhat you get
- Size per folder — a folder tree sorted by size.
- Treemap — a chart that shows at a glance what fills the disk.
- Explorer integration — start it straight from the right-click menu.
- Single-folder scans — no need to scan the whole drive.
- Simple interface — easy even for people who are not IT specialists.
Who may use it for free
The free edition is for private use in a non-commercial environment only, and it does not run on Windows Server. Business use requires TreeSize Personal or Professional, sold as an annual subscription per user. For an office computer, then, choose an open alternative or buy a subscription.
Related tools
An open-source alternative you can use anywhere — WinDirStat. A very fast scanner for NTFS drives — WizTree. For orderly backups of what you decide to keep — Kopia.
WinDirStat
WinDirStat team
A visual map of disk usage — find huge model, mesh and result files that are filling the drive.
Get it from the vendorWizTree
Antibody Software
An extremely fast disk-space analyser — finds huge model, mesh and result files in seconds.
Get it from the vendorEverything
voidtools
Instant file search by name across the whole PC — find the latest revision of a drawing buried in project folders.
Get it from the vendorKopia
Kopia project
Encrypted incremental backup with a GUI and scheduling — to local disks or the cloud storage of your choice.
Get it from the vendorThe bottom line
A simple, convenient disk clean-up tool for a home computer. At work — a paid subscription or an open alternative.