.7Z File Extension
Open-source compressed archive format with ultra-high LZMA/LZMA2 compression ratio.
application/x-7z-compressed
37 7A BC AF 27 1C (7z..)
Format Architecture & Technical Specifications
7z is an open-source compressed archive format featuring a modular architecture, strong AES-256 encryption, and high compression ratios using the LZMA and LZMA2 compression algorithms.
How to Open .7Z Files
1 Extract with 7-Zip
Right-click .7z archive > 7-Zip > Extract Files.
Compatible Software Programs
7-Zip
windows, mac, linux • Free
PeaZip
windows, mac, linux • Free
Security Considerations & Verification
Standard open compressed archive format.
- Use 7z command line tool with -r switch to extract raw file blocks.
Frequently Asked Questions
What is a .7Z file?
A .7Z file is a 7-Zip Compressed Archive associated with Archives. Open-source compressed archive format with ultra-high LZMA/LZMA2 compression ratio.
How do I open a .7Z file on Windows or Mac?
You can open .7Z files using 7-Zip, PeaZip. If you do not have native software installed, you can use AnyFileX's free File Identifier or convert .7Z to a standard format in your browser.
Is a .7Z file safe to open?
This format carries a safety rating of Low Risk. Standard open compressed archive format.
Can I convert a .7Z file to other formats?
Yes! .7Z can be converted to formats such as .ZIP directly in your web browser.
What should I do if a .7Z file is corrupted or won't open?
If your .7Z file displays an invalid header or signature error, check its magic bytes hex header (37 7A BC AF 27 1C (7z..)) using AnyFileX's Magic Byte Detector or follow our step-by-step file repair guide.