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WhatSize allows you to quickly measure the size in bytes of a given folder and all subfolders and files within it. You would be surprised at how many useless files might be laying around on your hard disks. The files and folders are automatically sorted by size, with the biggest sizes first. WhatSize helps find out what files are taking up all of that space. Then it makes it really easy to remove or move those files. You'd be surprised how many useless files are lying around on your Mac's hard disk.

While the app is measuring a folder the user can browse the files within that folder and immediately see the size in more...

What's New

Version 6.2.1:

Note: Now requires a 64-bit Intel processor.

  • Implemented the ability to quickly measure separate folders rather than the whole volume. Drop a folder in the left side bar and measure it quickly
  • Reduced memory usage by a good 15%
  • Reduced time to open the database by 10%, making the app snapier on launch
  • Added print button to the tool bar more...


  • OS X 10.8 or later

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Current Version (6.x)


Downloads 214,608
Version Downloads 2,372
License Shareware
Date 09 Jun 2015
Platform Intel 64 / OS X
Price $29.99
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