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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 6.1.5:
  • The application is now 64-bit, it will consume a bit more memory but the advantages are far greater
  • Initial support for Apple's FSEvents. This allows WhatSize to be synchronized with file system changes in real time
  • Overhaul of the duplicate engine for 3 to 5 times faster duplicate finding
  • Collecting UTI type data for each file when measuring. This more...


  • OS X 10.8 or later

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Current Version (6.x)


Downloads 205,063
Version Downloads 778
License Demo
Date 09 Jan 2015
Platform Intel 64 / OS X / Intel 32
Price $29.99
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