> Source: https://lumadisk.com/guides/find-large-files-windows · Last updated: 2026-10-01
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# How to Find Large Files on Windows

Windows File Explorer makes finding large files surprisingly difficult. Here's every method, from built-in tools to a visual disk analyzer.

By [MbApps](https://lumadisk.com/about) · Published May 7, 2026 · updated October 1, 2026 · 4 min read

**Short answer:** On Windows 11, open Settings → System → Storage → Cleanup recommendations for a short list of large or unused files. To search a whole drive, type `size:>1GB` in File Explorer's search box on This PC. Neither ranks folders, so for the full picture use a disk analyzer that maps every folder and file by size.

## Why File Explorer Falls Short

File Explorer can sort files by size within a single folder, but only that folder. There's no built-in way to search your entire drive for the largest files and get a ranked list. For most users, this makes tracking down large hidden files a frustrating, manual process.

## Using Storage Settings

On Windows 11, open Settings → System → Storage → Cleanup recommendations and expand **Large or unused files**. It lists a handful of big files you have not touched recently, with a checkbox to remove each. It is quick, but it is a short shortlist, not a ranking, and it never shows folders. For what the other Storage categories really contain, see [what's taking up space on your Windows PC](https://lumadisk.com/guides/what-is-taking-up-space-windows).

## Using Windows Search (Limited)

Windows Search supports a size filter:

- Open File Explorer and click **This PC** (or a single drive).

- Type `size:>500MB` in the search box and press Enter.

- Switch to **Details** view and click the **Size** column to sort largest first.

This surfaces files larger than 500 MB, but it's slow on an unindexed drive, doesn't show folder sizes, and often misses files in protected system directories. Or skip the search box entirely and see every large file laid out visually in LumaDisk's sunburst view of your drive (covered below).

## Using PowerShell

For a more comprehensive search, open PowerShell as administrator and run:

Get-ChildItem C:\ -Recurse -ErrorAction SilentlyContinue |
Where-Object { $_.Length -gt 500MB } |
Sort-Object Length -Descending |
Select-Object FullName, @{ N="Size(GB)"; E={ [math]::Round($_.Length/1GB,2) } } |
Format-Table -AutoSize

This lists all files larger than 500 MB, sorted by size. It works, but it takes several minutes to run, doesn't show folder-level totals, and requires comfort with the command line.

## Using a Disk Space Visualizer

The fastest and most practical method is a dedicated disk space analyzer. LumaDisk, available today on the Microsoft Store, renders your entire drive as an interactive sunburst chart. Large files appear as the biggest wedges, immediately visible without any searching.

You can click any wedge to see what it contains, drill into folders with a breadcrumb trail, and reveal a file in File Explorer, or queue it into LumaDisk's Bin and reclaim it without leaving the app. Reclaiming deletes permanently rather than routing through the Recycle Bin, with ten seconds to undo before it commits. It also shows folder sizes, something neither File Explorer nor PowerShell does cleanly. What would take 10–20 minutes of searching takes under a minute.

LumaDisk shows both individual file sizes and folder totals at every level of your directory tree, so you can see that a folder is large before drilling into it to find the specific files.

Free treemap tools like WinDirStat and WizTree do the folder ranking too, and both read the NTFS index for speed. Our [WinDirStat alternatives](https://lumadisk.com/guides/windirstat-alternative) guide compares them with LumaDisk side by side.

| | Storage settings | Explorer search | PowerShell | Disk analyzer |
| --- | --- | --- | --- | --- |
| Covers | A shortlist | Indexed locations | Any path you give it | The whole drive |
| Shows folder sizes | No | No | With extra scripting | Yes, at every level |
| Speed on a full drive | Fast | Slow when unindexed | Minutes | Seconds with an NTFS index scan |
| Effort | Low | Medium | High | Low |
| Cost | Built in | Built in | Built in | Free to paid |

_Ways to find large files on Windows compared, as of October 2026._

## What to Do Once You Find Large Files

Before deleting, consider each file:

- **Identify it first.** Some large files are system files Windows needs: `hiberfil.sys` (hibernate), `pagefile.sys` (virtual memory), and files in `C:\Windows\WinSxS\` should not be deleted manually. Use Disk Cleanup to handle those safely.

- **Move before deleting.** Large media files, project archives, and old backups are often better moved to an external drive than permanently deleted.

- **Check for duplicates.** ISO files, video exports, and setup installers are common duplicates, so you may have the same content in multiple places.

LumaDisk shows you the full path and file size before you delete anything, so you're never removing something blindly.

## Frequently asked questions

### How do I find the largest files on my PC?

On Windows 11, Settings → System → Storage → Cleanup recommendations → Large or unused files gives a short list. In File Explorer, open This PC and search size:>1GB. For a ranked view of files and folders across the whole drive, use a disk space analyzer.

### Can File Explorer show folder sizes?

Not in the list view. File Explorer shows folder sizes only one at a time, in the Properties dialog, which is why finding a heavy folder by hand means opening dozens of them. Disk analyzers calculate every folder at once.

### Which large files should I never delete on Windows?

Leave hiberfil.sys, pagefile.sys, swapfile.sys and anything inside C:\Windows, including WinSxS, alone. Turn hibernation off with powercfg /h off if you want hiberfil.sys gone, and clean update leftovers with Disk Cleanup rather than by hand.

### What is the fastest way to find large files on Windows?

A disk analyzer that reads the NTFS Master File Table maps a whole drive in seconds rather than minutes. WizTree, WinDirStat 2.5 and later, TreeSize Free and LumaDisk's Fast Scan all do this, with administrator rights.