Windows 11 Storage Almost Full? How to Find What's Taking Up Space

The Storage Breakdown Windows Already Gives You

Before hunting for individual files, get the big picture first. Open Settings > System > Storage and let it scan — this usually takes a minute or two on a fuller drive. It returns a bar showing your total used and free space, followed by a category breakdown: Apps, Temporary files, Documents, Pictures, Videos, System & reserved, and more, each sorted from largest to smallest.

Click "Show more categories" for a fuller list, including "Other" — a catch-all bucket for anything Windows can't neatly classify, which is often larger than expected and worth clicking into directly. This single page usually narrows a mystery from "my whole drive" down to one or two specific categories worth investigating further.

Finding the Exact Large Files

A size-based search filter finds files that would otherwise take an hour of manual folder-clicking to track down.

Once you know roughly which category is bloated, File Explorer's built-in size filter finds the actual files fast. Open File Explorer, click "This PC" so the whole drive is in scope, and type size:>1GB into the search bar. Every file over 1GB anywhere on the drive shows up — sort by Size (View > Sort by > Size) to put the biggest offenders first.

Adjust the threshold as needed: size:>5GB for a stricter cut when you're clearly dealing with something large, or the built-in presets — size:Large, size:Huge, size:Gigantic — if you'd rather not remember exact numbers.

PowerShell, If You Want the Full Picture at Once

File Explorer's search is quick but shows results in whatever order they're indexed. If you'd rather see a clean, ranked list immediately, PowerShell can do it in one line. Open PowerShell (search for it from the Start menu — admin rights aren't required for your own user folders) and run:

This can take a few minutes on a large drive since it's scanning every folder, including ones File Explorer's search sometimes skips over. The -ErrorAction SilentlyContinue part quietly skips protected system folders you don't have permission to read, rather than stopping the whole command on the first one it hits.

Where the Missing Space Actually Tends to Be

After running these methods on enough machines, the same categories come up again and again. Knowing them ahead of time can save you a search.

What to Do With What You Find

Disk-Mapping Tools Worth Knowing About

Sometimes a ranked list of files isn't as useful as seeing the whole drive laid out visually, especially when the problem is thousands of small files in one folder rather than a few huge ones. Free tools like WinDirStat or TreeSize Free build a color-coded map of your entire drive, with larger folders rendered as bigger blocks you can click into. This makes patterns obvious in a way a text list doesn't — a folder that looks unremarkable in a file list can turn out to be enormous once you see how much visual space it occupies on the map.

These aren't required for most cleanups — the built-in Storage page and File Explorer's size search cover the majority of cases. But if you've gone through both and space is still unaccounted for, a visual map is usually the fastest way to spot the pattern you've been missing.

Stopping This From Becoming a Repeat Problem

Once you've cleared space, it's worth turning on Storage Sense (Settings > System > Storage > Storage Sense) so temp files and old Recycle Bin contents get cleared automatically rather than building back up silently over months. It won't touch anything personal, and it means the next "storage almost full" warning is less likely to catch you off guard with no idea why.

Frequently Asked Questions