How to Install Homebrew on macOS: A Complete Setup Guide

Homebrew is the most widely used package manager for macOS — and for good reason. It lets you install command-line tools, programming languages, databases, and developer utilities with a single terminal command, without wrestling with manual downloads or complex configuration files. If you're setting up a development environment on a Mac, understanding how Homebrew works and how to install it correctly is a foundational step.

What Is Homebrew and Why Do Developers Use It?

A package manager automates the process of installing, updating, and removing software. On macOS, Apple doesn't ship a built-in package manager for developer tools, so Homebrew fills that gap.

Once installed, Homebrew lets you run commands like:

Rather than visiting individual websites, downloading installers, and managing dependencies manually, Homebrew handles all of that for you. It installs packages into their own directories and symlinks them into a standard location, keeping your system clean and organized.

Formulae are Homebrew's packages for command-line tools. Casks extend Homebrew to install full macOS applications — like browsers, code editors, and design tools — using the same workflow.

What You Need Before Installing Homebrew

Before running the install command, a few prerequisites matter:

• macOS version: Homebrew officially supports macOS Ventura, Monterey, Big Sur, and recent releases. Older versions of macOS may still work but receive limited support.
• Apple Silicon vs. Intel: Homebrew runs natively on both Apple Silicon (M1/M2/M3) and Intel Macs, but the default installation path differs. On Apple Silicon, Homebrew installs to /opt/homebrew. On Intel Macs, it uses /usr/local. This distinction matters if you're following older documentation.
• Xcode Command Line Tools: Homebrew requires Apple's Xcode Command Line Tools, which include compilers and build utilities. The Homebrew installer can trigger this installation automatically, but knowing it's a dependency helps you understand what's happening during setup.
• Terminal access: You'll need access to Terminal (or a terminal emulator like iTerm2). No prior command-line expertise is required for the installation itself.

Step-by-Step: Installing Homebrew on macOS 🍺

Step 1 — Open Terminal

Open Terminal from Applications → Utilities, or search for it with Spotlight (⌘ + Space, then type "Terminal").

Step 2 — Run the Official Install Script

Paste the following command into Terminal and press Return: