ARC to TAR.BZ (TBZ) Converter
Convert your arc files to tar.bz online & free
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tar.bz
How to convert ARC to TAR.BZ
Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.
Choose tar.bz or any other format you need as a result (more than 200 formats supported)
Let the file convert and you can download your tar.bz file right afterwards
About formats
ARC is one of the earliest widely-used compressed archive formats for personal computers, created by Thom Henderson of System Enhancement Associates (SEA) in 1985 for MS-DOS. The format combines multiple files into a single archive with per-file compression, supporting several compression methods including no compression (stored), run-length encoding, Huffman coding, and LZW (Lempel-Ziv-Welch) variants. Each file entry in an ARC archive carries its own header with the original filename, compressed and uncompressed sizes, timestamp, CRC checksum, and compression method indicator. ARC became the dominant archive format on DOS-based bulletin board systems (BBS) during the mid-1980s, serving as the primary means of distributing software, documents, and data files online before the internet era. The format sparked a notable legal controversy when Phil Katz created a compatible utility (PKARC), leading to a lawsuit from SEA that ultimately motivated Katz to develop the ZIP format as a legal alternative. One advantage of ARC was its per-file compression approach, allowing individual files to be extracted without decompressing the entire archive. The integrated CRC checksums provided another benefit, enabling reliable verification of data integrity after transfer over error-prone modem connections. While ZIP and more modern formats supplanted ARC by the early 1990s, the format holds historical significance as a foundational technology in the evolution of data compression and file distribution.
TAR.BZ is a compound archive format pairing the TAR archiver with bzip compression. The TAR layer concatenates files into a single stream with full Unix metadata (permissions, ownership, timestamps, symlinks), and the bzip algorithm compresses the resulting stream. The bzip family of compressors uses block-sorting techniques derived from the Burrows-Wheeler transform, which rearranges data to group similar bytes together before applying move-to-front encoding and Huffman compression. This approach typically achieves better compression ratios than gzip/Deflate, particularly on text and source code. TAR.BZ archives are common on Unix and Linux systems for distributing source packages and backups where improved compression over TAR.GZ is desired. One advantage is strong compression on text-heavy data — block-sorting algorithms excel at compressing source code, log files, and structured text, producing meaningfully smaller archives. The two-layer design is another practical strength: the TAR container handles archiving concerns (metadata, directory structure) while the compression layer operates on the full concatenated stream, maximizing cross-file redundancy exploitation. TAR.BZ files can be processed by standard Unix tools and extracted by 7-Zip, WinRAR, and other cross-platform archivers.