You downloaded project-assets.rar, double-clicked it, and macOS shrugged: “There is no application set to open the document.” Nothing is broken and the file is probably fine. macOS simply ships with zero RAR support — ZIP is handled natively, RAR is not, and Apple has never licensed the format.
The good news: you never need to buy anything to open a RAR file on Mac. There are four free routes, and the right one depends on whether this is a one-off download or something you deal with weekly. Below are all four with real commands, real file names and the exact point where each one fails.
Why macOS says it can't open your .rar
When you double-click an archive in Finder, macOS hands it to Archive Utility, a small helper app buried in /System/Library/CoreServices/. Archive Utility is genuinely useful, but its format list is short and closed:
- Handled:
.zip,.tar,.gz,.tar.gz/.tgz,.bz2,.cpio, and a few legacy relatives - Not handled:
.rar,.7z,.arj,.isoarchives, split RAR volumes like.part1.rar
RAR is a proprietary format owned by RARLAB. Unpacking it requires licensed code or a clean-room implementation, so Apple left it out entirely — which is why macos rar unsupported is the single most common complaint from people receiving archives from Windows colleagues. The fix is always the same in principle: get the contents out of RAR and into something your Mac already understands, or install a free tool that speaks RAR.
Fastest fix: convert the RAR to ZIP in your browser
If this is a one-off — a single archive someone emailed you — installing software is overkill. Converting the archive is faster and leaves nothing behind on your Mac.
- Open the RAR to ZIP converter on File Convert Online.
- Drag
project-assets.raronto the page and start the conversion. - Download the resulting
project-assets.zip. - Double-click the ZIP. Archive Utility unpacks it into a folder next to it — no app, no Terminal, no licence.
The conversion is lossless: a RAR and a ZIP are both containers, so repacking changes the compression wrapper, not your JPEGs, PSDs or spreadsheets. A 240 MB RAR of photos typically lands within a few percent of its original size as a ZIP, because photos are already compressed and neither format can squeeze them much further. Text-heavy archives may grow slightly, since RAR's solid compression is a little tighter than ZIP's deflate.
Two caveats worth knowing before you upload. First, password-protected RARs can't be repacked without the password — unlock them locally instead (see the Terminal section). Second, if the contents are confidential client material, prefer a local tool. For anything else, the same site's other archive converter tools handle 7Z, TAR and ISO-style conversions the same way.
The Unarchiver: the classic free Mac app
If RARs land in your Downloads folder regularly, install The Unarchiver from the Mac App Store. It's free, it's been around for well over a decade, and it reads RAR (including RAR5), 7Z, ISO, StuffIt and dozens of other formats.
After installing, open it once and tick the archive types you want it to claim — at minimum RAR and 7Z. From then on, double-clicking project-assets.rar extracts it straight into the same folder, exactly like a ZIP. In its preferences, set Extract archives to: the same folder as the archive and enable Move archive to Trash after extraction if you don't like clutter.
One quirk: if a RAR was created on a Windows machine with non-English filenames, you may get mojibake. The Unarchiver's Filename encoding setting (try Windows Latin 1 or Shift-JIS) fixes it.
Keka: when you also need to create archives
Keka is the other free staple. It extracts RAR, 7Z, ZIP, TAR, LZMA and more, and unlike The Unarchiver it also creates archives — 7Z, ZIP, TAR, with AES-256 encryption and split volumes. (It can't create RAR; nothing free can, because only RARLAB's WinRAR writes that format.)
The free version is the download from keka.io; the Mac App Store listing is a paid "support the developer" copy of the same app. Grab it from the website if you want it free. Keka sits in the Dock as a drop target: drag a RAR onto the icon and it unpacks, drag a folder on and it compresses using whatever format is selected in the toolbar.
Hands-on: unpack RAR from Terminal with unar
The command-line version of The Unarchiver is unar, and it's the cleanest option if you already use Homebrew. Install it once:
brew install unarThen peek inside an archive before extracting — handy when you don't trust the source or want to know whether it will explode 400 files into your Downloads folder:
lsar -l ~/Downloads/project-assets.rarExtract it into a folder of your choosing:
unar -o ~/Desktop/assets ~/Downloads/project-assets.rarUseful flags in real life:
-p "yourpassword"— opens an encrypted RAR without the interactive prompt-e windows-1252— forces a filename encoding for Windows-made archives-f— overwrite existing files instead of creatingfile-1.jpgduplicates-d— always create a containing folder, even if the archive has a single root item
Multi-part archives confuse people more than anything else. If you received backup.part1.rar through backup.part6.rar, don't run unar six times. Keep all parts in the same folder and point it at the first one only:
unar ~/Downloads/backup.part1.rarunar pulls in the remaining volumes automatically. The same rule applies to the older .rar + .r00 + .r01 naming — start with the .rar file.
Prefer 7-Zip? The official port is in Homebrew too and extracts RAR fine:
brew install sevenzip
7zz x ~/Downloads/project-assets.rar -o/Users/me/Desktop/assetsNote the syntax trap: 7zz takes no space between -o and the output path, and x (not e) preserves the folder structure inside the archive. Use 7zz l archive.rar to list contents first.
Which route to pick
- One archive, not confidential, want it done in 60 seconds → convert RAR to ZIP in the browser.
- You get RARs most weeks → The Unarchiver, set as the default handler for
.rar. - You also need to make encrypted or split archives → Keka.
- You live in Terminal or are scripting a batch of archives →
unar, or7zzif you already have it.
Whatever you choose, nothing here costs money. Any Mac App Store result charging for a "RAR Extractor Pro" is selling you a wrapper around free code.
FAQ
Can macOS open RAR files natively? No. Archive Utility handles ZIP, TAR and GZIP but not RAR, in any macOS version including Sequoia. That's why you see “no application can open this file”.
Is The Unarchiver really free and safe? Yes — it's a long-established free app distributed through the Mac App Store, so it runs sandboxed and notarised.
How do I open a password-protected RAR on a Mac? Use unar -p "password" archive.rar, or let The Unarchiver prompt you. Online conversion can't help here — the tool needs the password to read the contents.
Does converting RAR to ZIP damage the files? No. Both are lossless containers; your files come out byte-identical. Only the compressed size changes slightly.
Can I create a RAR file on a Mac for free? Not properly — writing RAR requires WinRAR's licensed tooling. Send a ZIP or 7Z instead; both open on Windows without extra software (ZIP natively, 7Z with 7-Zip).
I only have `backup.part3.rar` — can I extract it? No. Split archives need every volume present. Ask the sender for the missing parts.
Your next step with that .rar
If the file is sitting in Downloads right now and you just want it open, run it through the RAR to ZIP converter and double-click the ZIP — that's two minutes, no install. If you expect more RARs after this one, spend another two minutes installing The Unarchiver or brew install unar so the next double-click just works.