RAR to 7Z Converter
Initializing... drag & drop files here
Supports: RAR
Advanced Options - Our defaults are optimized for the best results. We recommend you keeping the defaults unless you have a specific need.
Reset to defaults
Need help?Convert RAR to 7Z Online
Repack a proprietary RAR archive into the open 7z format without touching the files inside. Your RAR is extracted and its contents are re-archived as 7z, so every byte is preserved exactly — only the container and compression change. Because 7z (created by Igor Pavlov, free and open-source) usually compresses a bit tighter than RAR and is supported everywhere, this is a sensible move off a format you need WinRAR or a paid license to create.
How to Convert RAR to 7Z
- Upload Your RAR File: Drag and drop your archive onto the page or click "+ Add Files" to pick it from your computer. You can add several RAR files at once.
- Choose Single or Individual Archives: Under the "Combine?" control, pick "Single Archive" to merge everything into one 7z, or "Individual Archives" to produce one 7z per uploaded file.
- Confirm 7Z as the Output: The output format is already set to 7Z; the defaults are tuned for a good compression-to-speed balance, so you rarely need to change anything.
- Convert and Download: Click "Convert" and download your 7z archive. No sign-up, no watermark.
RAR vs 7Z at a Glance
| Property | RAR | 7Z |
|---|---|---|
| License | Proprietary (RARLAB / win.rar GmbH) | Open-source (LGPL, Igor Pavlov) |
| Released | 1993, by Eugene Roshal | 1999, by Igor Pavlov |
| Default compression | RAR5 algorithm | LZMA2 |
| Typical size | Baseline | Often ~5–15% smaller on mixed data |
| Encryption | AES-256 (RAR5) | AES-256 |
| Recovery records | Yes — can repair partial corruption | No built-in recovery |
| Cost to create | WinRAR license required | Free in 7-Zip and most tools |
| Best for | Recovery records, fast unpacking | Tightest ratio, fully open archives |
Frequently Asked Questions
Will converting RAR to 7Z reduce the file quality?
No. Archive formats like RAR and 7z are lossless containers — they store your files byte-for-byte. Converting RAR to 7z extracts the contents and repacks them, so the files inside come out identical. Only the wrapper and its compression change, not the data.
Will the 7Z file be smaller than the original RAR?
Usually, yes, but not always. On a typical mixed folder (documents, code, binaries), 7z's LZMA2 compression tends to produce archives roughly 5–15% smaller than RAR5. Already-compressed contents (JPEGs, MP4s, existing archives) won't shrink much in either format, so the difference there is small.
What can open a 7Z file after I convert?
7-Zip (Windows), Keka and The Unarchiver (macOS), and p7zip or Ark (Linux) all open 7z natively. Windows 11 also added native 7z and RAR extraction to File Explorer in its October 2023 update, though that built-in handler does not prompt for passwords on encrypted archives.
Do I lose RAR's recovery records when I switch to 7Z?
Yes. RAR can store optional recovery records that let you repair a partially corrupted archive; 7z has no equivalent built-in mechanism. If recoverability from disk errors matters more to you than compression ratio, that is the main reason to stay on RAR.
Does the conversion keep my folder structure and filenames?
Yes. The directory tree, filenames (including Unicode names), and the relative paths inside the archive are preserved when the contents are repacked into 7z.
Is the conversion private?
Your file is uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours. There is no sign-up, no watermark, and your archives are never shared or made public.
What if I want maximum compatibility instead of the tightest size?
If you are sending the archive to people on older or locked-down systems, ZIP opens everywhere with no extra software. Use Convert RAR to ZIP for the most universal option, or Convert 7Z to ZIP if you later need to share a 7z more broadly.