RAR を 7Z に変換

Free online RAR to 7Z converter. Fast, secure, no signup required.

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Accepted: RAR files · Max 100 MB per file

rar 7z

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Need to convert RAR to 7Z? MegaConvert makes it easy. Upload your Roshal Archive (RAR) file and get a 7-Zip Archive (7Z) file in seconds — no software to install, no signup required. Whether you need this conversion for email attachments, archival / device compatibility, our online converter handles it instantly. Free for files up to 25MB, with support for larger files up to 2GB.

How to Convert RAR to 7Z Online

1
Upload your RAR file
Click the upload area or drag and drop your RAR file. Files up to 25MB are free. Larger files are supported with pay-per-use.
2
Choose 7Z as output format
7Z is automatically selected on this page. You can adjust conversion settings if needed.
3
Click Convert
Hit the Convert button to start processing. Your file will be converted using our high-performance servers.
4
Download your 7Z file
Once conversion is complete, click Download to save your new 7Z file. Free files are available for 1 hour.

Why Convert RAR to 7Z?

**Reduce file size** — Converting between formats can significantly reduce file size, making files easier to share via email or cloud storage.
**Software requirements** — Your software or platform may require 7Z format specifically. Converting ensures full compatibility.

RAR vs 7Z — Format Comparison

Feature	RAR	7Z
Full Name	Roshal Archive	7-Zip Archive
Developer	Alexander Roshal (RARLAB)	Igor Pavlov
First Released	1993	1999
Category	Archive	Archive
Extension	.rar	.7z
MIME Type	application/vnd.rar	application/x-7z-compressed

7Z offers the best compression ratio. ZIP has the widest compatibility.

About RAR Format

Proprietary archive format with high compression ratios and error recovery records.

Full name: Roshal Archive

Developer: Alexander Roshal (RARLAB) (1993)

About 7Z Format

Open-source archive format with very high LZMA/LZMA2 compression ratios.

Full name: 7-Zip Archive

Developer: Igor Pavlov (1999)

よくある質問

Upload your RAR file to MegaConvert.io, select 7Z as the output format, and click Convert. Your converted file will be ready to download in seconds. No software installation required.

Yes! Files up to 25MB can be converted for free, up to 3 times per day. For larger files, pay-per-use pricing starts at just $2 for files up to 100MB.

Absolutely. All uploaded files are encrypted in transit (HTTPS), scanned for viruses, and automatically deleted after conversion. We never share or access your files.

Free users can convert files up to 25MB. Pay-per-use supports files up to 2GB. Subscribers get up to 2GB with priority processing.

Proprietary archive format with high compression ratios and error recovery records. Developer: Alexander Roshal (RARLAB) (1993).

Open-source archive format with very high LZMA/LZMA2 compression ratios. Developer: Igor Pavlov (1999).