Convert CAB to 7Z Online — Free
Fast, free CAB to 7Z converter. No registration required.
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Upload your .cab file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .7z file when it's ready.
What is CAB?
CAB is the Windows Cabinet archive format used in Microsoft OS installers, service packs, and driver packages. It supports LZX, Quantum, and MSZIP compression with optional digital signatures.
Format Details
- Full Name
- Windows Cabinet Archive
- Extension
- .cab
Key Features
- Windows native
- LZX/Quantum/MSZIP
- Digital signatures
- Multi-cabinet
What is 7Z?
7Z is a high-compression archive format from the 7-Zip project. It achieves significantly better compression ratios than ZIP using LZMA/LZMA2 algorithms.
Format Details
- Full Name
- 7-Zip Archive
- Extension
- .7z
Key Features
- High compression
- LZMA2 algorithm
- AES-256 encryption
- Open source
CAB vs 7Z
| Feature | CAB | 7Z |
|---|---|---|
| Full Name | Windows Cabinet Archive | 7-Zip Archive |
| Extension | .cab | .7z |
| Best For | Windows native | High compression |