How to Open RAR Files on a Mac
RAR files are everywhere — downloads from file-sharing sites, compressed archives from colleagues, software bundles, and backup packages. But macOS doesn't include built-in support for the RAR format the way it handles ZIP files. If you've double-clicked a .rar file and gotten nothing useful, you're not alone. Here's what's actually going on and what your options look like.
What Is a RAR File and Why Can't Mac Open It Natively?
RAR (Roshal Archive) is a proprietary compression format developed by Eugene Roshal. Unlike ZIP, which is an open standard that Apple has baked into macOS for years, RAR requires licensed technology to extract — so Apple doesn't ship support for it out of the box.
When you try to open a RAR file on a Mac without any additional software, macOS may either do nothing, prompt you to find an app, or (in some cases) partially open it incorrectly. You need a third-party extraction tool to actually decompress the contents.
This is a format compatibility issue, not a permissions problem or a corrupt file — important to understand before spending time troubleshooting the wrong thing.
The Main Ways to Open RAR Files on Mac
There are several approaches, each with different trade-offs around cost, convenience, and features.
Using a Free App from the Mac App Store
The most common starting point for most users. Apps like The Unarchiver are free, well-maintained, and integrate directly into macOS — meaning you can double-click a RAR file just like you would a ZIP once the app is installed and set as the default handler.
The Unarchiver specifically supports not just RAR but a wide range of archive formats including .7z, .tar, .gz, .bz2, and others. After installing, you associate it with RAR files through Finder:
- Right-click any
.rarfile - Select Get Info
- Under Open With, choose your extraction app
- Click Change All to make it the default for all RAR files
From that point forward, double-clicking a RAR file opens it automatically.
Using the Terminal (Command Line)
If you're comfortable with the command line, macOS lets you install unrar or unar via Homebrew — a popular package manager for macOS.
brew install unar Once installed, you can extract a RAR file with:
unar filename.rar This approach is particularly useful for batch processing, scripting workflows, or working on machines where installing GUI apps isn't practical. It's also useful when dealing with multi-part RAR archives (.part1.rar, .part2.rar, etc.), where command-line tools often handle sequencing more reliably.
Using a Paid Archive Manager
Apps like Archiver 4 or BetterZip offer a more polished experience — drag-and-drop interfaces, archive previewing without full extraction, and robust support for multi-part and password-protected RAR files. These typically cost a one-time fee and are available through the Mac App Store or developer websites.
The added value is mostly around convenience and edge cases: handling damaged archives, previewing contents before extracting, or managing very large compressed files.
A Quick Comparison of Approaches 📦
| Method | Cost | Ease of Use | Multi-Part RAR | Good For |
|---|---|---|---|---|
| The Unarchiver (App Store) | Free | Very Easy | Yes | Most everyday users |
| Terminal (unar/unrar) | Free | Moderate | Yes | Power users, scripting |
| Paid archive manager | Paid | Easy | Yes | Heavy or professional use |
Multi-Part RAR Archives: A Common Snag
If your download came as multiple files — archive.part1.rar, archive.part2.rar, archive.part3.rar — these are split archives designed to be extracted together. You only need to open or extract the first part (.part1.rar); the tool handles the rest automatically, as long as all parts are in the same folder.
Missing even one part typically causes extraction to fail or produce a corrupted output. If you're getting errors, check that all numbered parts are present before assuming the file itself is broken.
Password-Protected RAR Files
Some RAR archives are encrypted with a password. Most extraction apps will prompt you to enter the password during extraction. If you don't have the password, no software can bypass the encryption — RAR uses AES-256 encryption, which is genuinely strong and not practically crackable by consumer tools.
If you've forgotten or lost the password to your own archive, recovery options are limited and depend heavily on how complex the password was.
macOS Version and Compatibility Considerations 🖥️
Most RAR tools work across a broad range of macOS versions, but there are a few things worth checking:
- Apple Silicon Macs (M1, M2, M3): Most modern apps are now compiled as Universal Binaries, but older tools may run under Rosetta 2. Performance is generally fine either way for this task.
- macOS Gatekeeper: Apps downloaded outside the App Store may trigger a security warning. You'll need to approve them in System Settings → Privacy & Security.
- Older macOS versions: If you're running something like Catalina or earlier, check app compatibility before downloading.
What Actually Determines the Right Approach for You
The "best" method for opening RAR files on a Mac isn't the same for every person. A few factors shift the answer meaningfully:
- How often you deal with RAR files — occasional use doesn't justify paid software
- Whether you encounter multi-part or encrypted archives — some free tools handle these better than others
- Your comfort with Terminal — Homebrew-based tools are powerful but require initial setup
- Your macOS version and chip architecture — affects which apps run natively vs. through compatibility layers
- Whether you need to preview contents before extracting — a feature most free tools skip
The technical steps are straightforward once you pick a path. Which path makes sense depends entirely on your own workflow and how RAR files fit into it.