B1 Converter

Extract text from B1 files

Select File
Drop or upload your .B1 file

Online File Converter

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How to extract text from your B1 file

Click the "Select File" button above, and choose your B1 file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.

Convert B1 to another file type

To convert your B1 file to another format, you need B1 Free Archiver or other Compressed software.

Convert a file to B1

To convert other file formats to the "Archive File" file type, you need software like B1 Free Archiver or a similar tool.

About B1 files

The .B1 file extension represents a compressed archive created by B1 Free Archiver. Designed as an open-source alternative to proprietary formats like RAR, it utilizes advanced compression algorithms (often LZMA-based) to significantly reduce file size while supporting features like password protection, AES 256-bit encryption, and file splitting.

While technically efficient, the .B1 format presents a major usability barrier: lack of native support. Unlike ZIP files, which open automatically on Windows, macOS, and standard Linux distributions, .B1 archives require the recipient to install specific third-party software like B1 Archiver or 7-Zip. This creates friction when sharing files with clients or colleagues who may not have these tools installed. Additionally, legacy database systems like Sequiter CodeBase or SAP Business One may use .B1 for index files, which are strictly for internal system use and cannot be opened as archives.

Best Conversion Targets:

For Universal Compatibility: Convert to ZIP. This ensures the file can be opened on any device without extra software.
For Storage Efficiency: Convert to 7Z. This maintains high compression ratios similar to B1 but with wider software support.
For Legacy Support: Convert to RAR if interacting with older archiving workflows.

Convert.Guru analyzes your B1 file, detects the exact format, and lets you read the text inside.

Users also converted B1S, B, RAR, 7Z, ZIP, B01, DOCX, SIT, A3 and B2 files.

FAQ

If you want to convert B1 file to A3, B2, ZIP, RAR, 7Z, TAR, GZ, BZ2, XZ, LZMA, CAB or ACE, you can use B1 Free Archiver or similar software from the "Compressed Archive Storage" category. In the File menu, look for Save As… or Export….

To convert XXE, 7Z, Z, PAK, LHA, DEB, UUE, TAR, LZH, ZIP, PKG or RAR files to B1, try B1 Free Archiver or another comparable tool in the "Compressed Archive Storage" category.

The B1 Converter Story

The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our B1 converter.