TBZ2 (TAR.BZ2) to TAR.7Z (T7Z) Converter
Convert your tbz2 files to tar.7z online & free
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How to convert TBZ2 to TAR.7Z
Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.
Choose tar.7z or any other format you need as a result (more than 200 formats supported)
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About formats
TBZ2 (also written as .tar.bz2) is a compound archive format combining TAR archiving with bzip2 compression, developed by Julian Seward and first released on July 18, 1996. The TAR layer concatenates files with full Unix metadata into a single stream, and bzip2 compresses the result using the Burrows-Wheeler block-sorting algorithm combined with Huffman coding. Bzip2 processes data in blocks (typically 900 KB), applying the BWT to sort the block, then run-length encoding, move-to-front transformation, and finally Huffman encoding. This pipeline typically achieves 15-25% better compression than gzip on most data types, with particularly strong results on text, source code, and structured data. TBZ2 was the standard high-compression archive format on Linux and Unix systems before XZ gained widespread adoption. One advantage is the compression improvement over TGZ — bzip2 consistently produces smaller archives, meaningful when distributing large source trees or creating storage-constrained backups. The block-based architecture provides another benefit: if an archive is corrupted, data loss is limited to the affected blocks rather than the entire stream, and bzip2recover can extract intact blocks from damaged files. TBZ2 is supported by GNU tar via the -j flag and is recognized by every major archiving tool across platforms. The format remains widely used in source distribution and backup workflows.
TAR.7Z is a compound archive format that combines the TAR container with 7-Zip's LZMA/LZMA2 compression. The TAR layer bundles multiple files into a single stream preserving Unix metadata (permissions, ownership, symlinks), while the outer 7Z compression applies LZMA or LZMA2 to the entire stream. This combination leverages LZMA's superior compression ratios — typically 30-70% better than gzip — making TAR.7Z one of the most space-efficient archive formats for Unix-style backups and software distribution. The solid-stream approach means compression can exploit redundancy across all archived files rather than compressing each file independently. One advantage is maximum compression density: the TAR.7Z combination often produces the smallest archives among common Unix archive+compression pairings. Broad tool support is another strength — tar and 7-Zip are available on all major platforms, and many modern tar implementations can create and extract TAR.7Z archives directly with the appropriate flag. The format is popular for distributing large source code trees and backup archives where minimizing transfer size justifies the additional compression time.