Upload Your RAR
Select a RAR archive from your device or drag and drop it into the upload area.
Fast, Secure & Easy
RAR to 7Z Converter
Convert RAR archives into modern 7Z files with secure extraction and strong compression. No technical skills required.
Secure path validation
Strong 7Z compression
Automatic daily cleanup
How It Works
Turn your RAR archive into a 7Z file in three simple steps.
Start Conversion
Click “Convert to 7Z.” The server safely extracts the RAR and creates a new 7Z archive.
Download 7Z
When conversion finishes, download your new .7z archive with one click.
Why Use Our RAR to 7Z Converter?
A secure, dependable way to rebuild RAR contents in the efficient 7Z format.
Efficient Archive Format
7Z supports strong compression and works with archive managers on Windows, Linux, and macOS.
Security Checks
Unsafe paths, symbolic links, excessive file counts, and oversized extracted archives are rejected.
Strong Compression
Compression level 7 and multithreading provide a practical balance of archive size and speed.
What Is a RAR File?
RAR is a proprietary archive format developed by Eugene Roshal. It supports lossless compression, multi-volume archives, recovery records, and optional encryption. RAR is commonly used for software packages, large downloads, backups, and file sharing, but extracting it usually requires compatible archive software.
Why convert RAR to 7Z?
7Z is a modern archive format known for strong compression and large-file support. Converting RAR to 7Z can improve storage efficiency for documents, source code, logs, and repeated data. Already compressed media may not become smaller.
Professional 7Z output
This converter validates each RAR entry, safely extracts the archive into an isolated temporary folder, and rebuilds the contents with 7-Zip using multithreading and compression level 7.
Frequently Asked Questions
Helpful answers about converting RAR archives to 7Z.
How do I convert a RAR file to 7Z?
Upload your .rar archive, click “Convert to 7Z,” wait for processing to finish, and then download the new 7Z file.
What compression software does the tool use?
The converter uses the server’s 7-Zip command to inspect and extract the RAR archive and to create the final .7z file.
Is this RAR to 7Z converter free?
Yes. The tool can be used without registration or special conversion software.
Will the 7Z archive always be smaller?
No. Documents and repeated data often compress well, while images, videos, MP3 files, and other pre-compressed data may show little reduction.
What is the maximum upload size?
The tool accepts RAR archives up to 100 MB, 5,000 entries, and 500 MB after extraction. Your PHP upload limits must also allow 100 MB.
Are uploaded archives kept on the server?
The tool removes temporary extracted files immediately and automatically deletes uploaded and converted files older than 24 hours.
Why is my RAR file not converting?
The archive may be damaged, encrypted, unsafe, too large after extraction, or your server may not have PHP exec() and a 7-Zip build with RAR support available.