Free tools for your Mac’s storage.
Quick answers, right in your browser. Nothing you type leaves this page.
Is there enough space for the macOS update?
Check whether your Mac has enough free space for the next macOS update or upgrade, and what to do if it doesn’t. Free, private, instant.
Open the toolHow much storage do you need?
Estimate how much storage you need on a Mac for apps, photos, video, Xcode, Docker, AI models and projects — and which SSD size to buy. Free.
Open the toolWhy does my 1 TB drive show less space?
Convert bytes, KB, MB, GB and TB (decimal) to KiB, MiB, GiB and TiB (binary), and see why a 1 TB drive shows less space than advertised.
Open the toolIs it safe to delete this folder?
249 folders · Search 249 common Mac folders and files — caches, Xcode, Docker, AI models, app data — and see what each is, if it’s safe to delete and how.
Open the toolMac storage glossary.
Plain-English definitions of Mac storage terms: APFS, containers, clones, snapshots, purgeable space, System Data, swap, GB vs GiB and more.
Open the toolRuns in your browser. No data is sent anywhere.