---
id: mac-storage-basics.what-uses-the-most-space-on-a-typical-mac
url: https://storagestudio.us/faq/mac-storage-basics/what-uses-the-most-space-on-a-typical-mac
category: "Mac storage basics"
subcategory: "Checking your storage"
question: "What usually takes up the most space on a Mac?"
alt_questions:
  - "what is eating my mac storage"
  - "biggest space hogs mac"
  - "why is my mac storage full"
  - "common things filling up mac storage"
  - "what takes up storage on macbook"
  - "mac storage full what to delete"
short_answer: "Usually photos and video, large apps, System Data (caches, snapshots, logs), iPhone backups, forgotten downloads, mail and chat attachments, and developer caches."
tags: ["space hogs", "storage", "overview"]
related: ["https://storagestudio.us/faq/mac-storage-basics/what-is-system-data-on-a-mac", "https://storagestudio.us/faq/mac-storage-basics/how-do-i-find-large-files-on-my-mac"]
applies_to: "all"
last_reviewed: 2026-10-01
---

# What usually takes up the most space on a Mac?

On most Macs the big users are a short, familiar list:

- **Photos and video** — the Photos library, screen recordings, video projects.
- **Apps** — creative suites, games, Xcode and developer tools.
- **System Data** — caches, logs, local snapshots, virtual memory, app support files.
- **Device backups** — iPhone and iPad backups.
- **Downloads, Desktop and Documents** — forgotten installers, disk images and archives.
- **Mail and Messages attachments** and chat apps' caches.
- **Developer data** — build caches, simulators, container images.

The quickest way to see *your* list is System Settings → General → Storage, or Storage Studio's What's Using Space, which checks the usual suspects by name. See [finding big files](https://storagestudio.us/faq/mac-storage-basics/how-do-i-find-large-files-on-my-mac).