RAR to TAR.Z (TZ) Converter
Convert your rar files to tar.z online & free
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How to convert RAR to TAR.Z
Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.
Choose tar.z or any other format you need as a result (more than 200 formats supported)
Let the file convert and you can download your tar.z file right afterwards
About formats
RAR (Roshal Archive) is a proprietary compressed archive format created by Russian software engineer Eugene Roshal in March 1993, distributed through the WinRAR) archiver that became one of the most widely installed Windows applications worldwide. The format uses a sophisticated compression algorithm that has evolved through several major versions (RAR 1.3, 2.0, 3.0, 5.0), with each revision improving compression ratios and adding features. RAR5, the current version, employs a dictionary-based algorithm with dictionary sizes up to 1 GB and supports optional BLAKE2sp hashing for integrity verification. The format provides solid compression (treating multiple files as a continuous stream), multi-volume archive splitting, recovery records for repairing damaged archives, AES-256 encryption for both content and filenames, and Unicode filename support. One advantage is reliable error recovery — RAR's recovery record feature can reconstruct damaged archive portions, a capability that made it popular for distributing large files across unreliable connections and Usenet posts. Strong compression performance is another key strength: RAR consistently ranks among the top formats for general-purpose compression ratios, particularly on heterogeneous file collections. While the compression algorithm is proprietary and creating RAR archives requires licensed software, the decompression code is freely available, and extraction is supported by virtually every archiving tool across all platforms. RAR remains one of the most common archive formats encountered online.
TAR.Z is a compound archive format combining TAR) archiving with Unix compress, one of the earliest general-purpose data compression tools available on Unix systems. The compress utility, originally written by Spencer Thomas, Joe Orost, and others around 1985, implements adaptive LZW (Lempel-Ziv-Welch) compression — a dictionary-based algorithm that builds a translation table during compression and decompression. The TAR layer bundles files with full Unix metadata into a single stream, and compress reduces the stream size typically by 40-60%. TAR.Z was the standard compressed archive format on Unix systems throughout the 1980s and early 1990s, before gzip emerged as a patent-free replacement. The LZW algorithm used by compress) was subject to patent claims by Unisys (holders of the LZW patent through Sperry), which motivated the development of gzip as an unencumbered alternative. One advantage is universal legacy compatibility — TAR.Z files can be extracted on any Unix system, including very old installations where newer compression tools may not be available. The format's historical ubiquity means that decades of archived software, documentation, and system backups exist as TAR.Z files. While TAR.GZ and TAR.XZ have replaced TAR.Z for new archives, the uncompress/zcat tools remain standard on all Unix-like systems, ensuring continued accessibility of legacy archives.