Unrar Online

How to open a RAR file on a Mac or a locked-down PC without installing anything

RAR is the format WinRAR produces, so the Mac’s built-in Archive Utility can’t open it, and on a work PC without install rights you can’t add WinRAR or 7-Zip either. This page unpacks both RAR4 and RAR5 archives inside your browser, lists what’s inside, and lets you save individual files or convert the whole thing to a ZIP. Nothing is uploaded anywhere.

A closer look

RAR is a proprietary format owned by WinRAR’s developer. The code for unpacking it is public, but its license forbids using that code to rebuild a RAR compressor, which is why 7-Zip and most other tools can extract RAR but never create it. zipmoa is no different: extraction only. Two generations are in circulation, RAR5, used since WinRAR 5.0, and the older RAR4, and this page handles both. Windows 11 gained built-in RAR support in File Explorer with a 2023 update, but Windows 10, work PCs held back from updates, Macs and phones still need extra software.

When you drop a RAR, an extraction engine bundled with the page unpacks every file into browser memory and lists them with their folder paths and sizes. Use Save to download files one at a time, or Save all as ZIP to get a single “original-extracted.zip” that keeps the folder structure. The second option effectively converts RAR to ZIP, which is handy when you need to pass the material on to someone on a Mac or a phone. One limitation matters: this browser engine cannot decrypt RAR encryption, so password-protected RAR archives have to be opened with desktop software.

How to use it

• Drop the RAR onto the area above or press Choose file. If you drop several, only the first opens, so add one archive at a time.
• Wait for “Extracting…” to finish and “Done! N file(s) extracted” to appear.
• Check the paths and sizes, then press Save next to each file you need. Files saved this way land under their bare names, without folders.
• If you need the folder structure, or plan to hand the files to someone else, press Save all as ZIP.

When it helps

Common snags

Tip If you need to pass a received RAR along, convert it with Save all as ZIP first, so the recipient can open it on any operating system without extra software.