Supports macOS: Tahoe 26, Sequoia 15, down to BigSur 11 For older systems click here
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WhatSize quickly measures the size of your storage devices and allows you to sort, filter, and refine the results. The files and folders are automatically sorted by size to show the largest first. The app uses the latest macOS technologies to stay up to date with any changes without having to re-scan everything.
Visualize your disk usage with the familiar Finder Columns View. Click on a directory to drill down for more detail.
Intelligent tools help you find space-wasters and remove them with a single click. Let WhatSize clean up log files, downloads, caches, temporary files, and application clutter such as unneeded translations in languages you don’t speak. Reclaim space and speed up your Mac.
Or you can always start a free trial!
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"WhatSize is a great little app that I use all the time."
– John"Needs to be in the next OS X update, it's that good."
– clandise"Helps hard disk house-cleaning immeasurably."
– mundkur_dotmac"I love the program...nothing I've found works better."
– JoelWhatSize is built by id-design, inc. Copyright © 1997-2025 id designs, inc. All rights reserved.
