RAR to 7Z Converter
Processing entirely on your device — large files may take a moment.
RAR Archive and 7-Zip Archive exist for different jobs: RAR is WinRAR’s proprietary archive format, everywhere on old download mirrors and share links. Creating RAR requires WinRAR, but reading it is open — so converting RAR to ZIP is fully doable locally. 7Z is ideal for big archives you store or share with power users; convert to ZIP when the recipient just needs to double-click.
This converter runs entirely in your browser using WebAssembly — your files never leave your device, nothing is uploaded, and there are no watermarks, sign-ups or queues. Drop in several files at once to convert them as a batch.
How RAR compares to 7Z
| RAR | 7Z | |
|---|---|---|
| Compression | Proprietary RAR algorithm | LZMA / LZMA2 |
| Encryption | AES-256 (RAR5) | AES-256 native |
| Bundling | Volumes + recovery records | Multi-file, solid mode |
| Best for | Split transfers, fault-tolerant archives | Maximum compression, secure archives |
How to convert RAR to 7Z
- 1
Select your files
Drag & drop your RAR files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to 7Z". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted 7Z file individually, or grab everything at once as a ZIP archive.
About the RAR format
RAR (Roshal ARchive, 1993) is a proprietary format whose decoder is free but whose compressor is the paid WinRAR/RAR products. It pioneered features everyone copied: recovery records that repair damaged archives, solid compression, and split volumes that reconstruct on any target. RAR5 added real AES-256 and larger dictionaries.
In practice you mostly receive RARs (scene releases, split downloads) rather than create them. Any modern tool extracts RAR; creating one requires WinRAR or compatible licensed software. Converting RAR to ZIP is the standard way to hand its contents to platforms that only speak ZIP.
+ Strengths
- ✓Recovery records can repair damaged archives
- ✓Mature split-volume support
- ✓Strong RAR5 encryption (AES-256)
! Limitations
- −Creating RAR requires paid software
- −Proprietary format
About the 7Z format
7Z is the native format of Igor Pavlov's 7-Zip (1999), built around LZMA/LZMA2 compression — for years the ratio king against ZIP and RAR — with AES-256 encryption, solid archiving (similar files compress as one stream) and open, unpatented specifications. A 7Z of the same photos or code is routinely 20–40% smaller than its ZIP.
The trade-off is platform defaults: Windows Explorer and macOS Archive Utility do not open 7Z without third-party tools (7-Zip, PeaZip, Keka). It is the format for maximizing compression on your own terms, and for encrypted archives done properly (header encryption included).
+ Strengths
- ✓Top-tier compression ratio (LZMA2)
- ✓Real AES-256 encryption, optional header encryption
- ✓Open format, free tooling everywhere
! Limitations
- −No native OS support — recipients need tools
- −Solid mode makes single-file extraction costly
Why convert RAR to 7Z?
There is a concrete reason this conversion exists: Creating RAR requires paid software 7Z sidesteps that — Top-tier compression ratio (LZMA2) If that is your situation, the tool above settles it in seconds, entirely on your device.
Frequently asked questions
Is this RAR to 7Z converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Is there a file size limit for RAR to 7Z?
The only limit is your device's memory, since nothing is uploaded. Files up to a few hundred megabytes work fine on a modern desktop browser; very large files simply take a little longer.
Is there a size limit for archive conversion?
There is no upload cap because nothing is uploaded — the practical limit is your device memory. A few hundred megabytes of unpacked content works comfortably on a modern computer.
Are the files inside my RAR archive modified?
No. Contents are unpacked in memory and repacked into 7Z byte-for-byte — the conversion changes the container, never the files inside it.