Share this article

Improve this guide

Wrong File Size Calculation in Windows: How to Fix it

Find out expert solutions that work for all

3 min. read

Updated onOctober 4, 2023

updated onOctober 4, 2023

Share this article

Improve this guide

Read our disclosure page to find out how can you help Windows Report sustain the editorial teamRead more

Key notes

Some users have been slightly baffled by properties windows showing them the wrong file and folder size calculation. File Explorer shows some users that some subfolders have larger sizes.

Thus, Windows must be miscalculating the sizes of the primary folders when properties show that some subfolders are larger than the main folders they’re in. While users had reportedUSB drives showing incorrect file size, this is new. Keep reading to find out all about the problem!

What can I do if Windows 10 files are showing the wrong size?

What can I do if Windows 10 files are showing the wrong size?

1. Reduce file title lengths that eclipse 255 characters

Users have stated that they’ve fixedFile Explorer folder sizemiscalculations by editing files and folder titles that eclipse 255 characters. Those users significantly reduced those file or folder titles to be much shorter than 255 characters.

Users can scan for folder and file titles that eclipse 255 with the TLPD software. TLPD will generate a text document that lists all file and folder titles that eclipse a specified number of characters. This is how users can scan for files and folders that eclipse a 255-character threshold with TLPD.

2. Check folder sizes with TreeSize

There are various disk space manager software for Windows 10 users to check folder sizes. Users who need more accurate folder size details can add TreeSize to Windows 10. That gives users a more detailed file and directory size overview than Explorer.

So, editing folders or file titles that eclipse 255 characters might fix File Explorer folder size discrepancies. Alternatively, add TreeSize to Windows 10 to check folder sizes and fix things when Windows 11 shows an incorrect file size.

Before you leave, check somereliable File Managers for Windows, in case the built-in File Explorer is the underlying cause.

For any queries or to share what worked for you, drop a comment below.

More about the topics:File Explorer,windows 10 fix

Matthew Adams

Windows Hardware Expert

Matthew is a freelancer who has produced a variety of articles on various topics related to technology. His main focus is the Windows OS and all the things surrounding it.

He is passionate about the tech world, always staying up-to-date with the latest and greatest. With an analytical view, he likes problem-solving, focusing on errors and their causes.

In his free time, he likes to read and write about history and tries to always develop new skills.

User forum

0 messages

Sort by:LatestOldestMost Votes

Comment*

Name*

Email*

Commenting as.Not you?

Save information for future comments

Comment

Δ

Matthew Adams

Windows Hardware Expert

He is passionate about everything surrounding Microsoft’s OS, focusing on troubleshooting guides & tips for everyday problems.

Reviewed byAlex Serban