Free · No Upload · Instant

Convert RAR to 7Z Free Online — Best RAR to 7Z Converter 2025

Convert RAR to 7Z online for free. Fast, private RAR Archive to 7-Zip Archive converter — no upload, no signup. Works in your browser instantly.

Choose Files

or drag and drop files here

Max file size: 2GB

Your files are processed locally in your browser. Nothing is uploaded to any server.

How to Convert RAR to 7Z

Upload your RAR file by clicking "Choose Files" or drag and drop it.

Select 7Z as the output format.

Click "Convert Now" and download your converted file.

About RAR Format

Extension: .rar
Full name: RAR Archive

About 7Z Format

Extension: .7z
Full name: 7-Zip Archive

Frequently Asked Questions

Is it safe to convert RAR to 7Z online?

Yes! Convert999 processes all files directly in your browser. Your files are never uploaded to any server, ensuring complete privacy and security.

How long does it take to convert RAR to 7Z?

Conversion is nearly instant for most files. Large files may take a few seconds depending on your device's processing power.

Is there a file size limit?

Convert999 supports files up to 2GB. Processing happens locally, so larger files depend on your device's available memory.

Do I need to install any software?

No installation required. Convert999 works entirely in your web browser on any device.

Can I convert RAR to 7Z on my phone?

Yes! Convert999 works on any device with a web browser — iPhone, Android, iPad, or desktop. No app installation required. Simply open the converter, upload your RAR file, and download the converted 7Z file.

Will I lose quality converting RAR to 7Z?

Convert999 uses high-quality conversion algorithms to minimize quality loss. For lossless formats, the conversion is exact. For lossy formats like images and audio, we use optimized settings that balance quality and file size.

Can I batch convert multiple RAR files to 7Z?

Yes, Convert999 supports batch conversion. Select or drag & drop multiple RAR files and convert them all to 7Z format at once. Each file is processed locally in your browser.

What is the difference between RAR and 7Z?

RAR Archive (RAR) and 7-Zip Archive (7Z) differ in compression, compatibility, and features. RAR is optimized for its native use cases, while 7Z may offer different advantages. Visit our RAR vs 7Z comparison page for a detailed breakdown.

Why Convert RAR to 7Z?

Advantages

✓7-Zip Archive offers better compatibility with modern applications and workflows
✓Converting is completely free with no file size limits on Convert999
✓Your files never leave your device — 100% private and secure conversion
✓Instant conversion without waiting for server processing

Key Differences

→RAR (RAR Archive) is optimized for its native use cases
→7Z (7-Zip Archive) may offer different compression or feature set
→Choose based on your target platform, quality needs, and file size requirements

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