TAR.Z to 7Z Converter

Convert TAR.Z to 7Z online for free. Fast, secure, and high-quality conversion with no sign-up or software required.

Free to useNo file stored beyond 1 hourEncrypted over TLS 1.2/1.3No watermarks

or drag and drop files here

Maximum file size is 1GB

Like RunConvert? Set us as a preferred source on Google.

Add to Preferred Sources

How it works

Three steps to your converted file

Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.

Upload your file

Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.

Choose an output format

Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.

Convert & download

Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.

What is a tar.z file?

The tar.z extension (often shortened to .taz) denotes a TAR archive compressed using the legacy Unix compress utility. This format relies on the Lempel-Ziv-Welch (LZW) adaptive compression algorithm. Historically significant in early Unix System V environments, it predates the DEFLATE algorithm used in gzip. Due to the patent encumbrances on LZW (Unisys) in the 1990s and lower compression efficiency compared to modern standards, it is technically obsolete but remains in legacy repository archives.

How to open a tar.z file

While the format is deprecated, most Unix-like systems (Linux, BSD, macOS) retain backward compatibility via the uncompress utility or gunzip, which can detect and decompress LZW streams (command: zcat file.tar.z | tar -xvf -). On Windows, 7-Zip provides robust support for opening legacy Z-compressed archives, as does the multi-format archiver IzArc.

tar.z Technical Info

Full Name: Tape Archive + Unix Compress
Developed By: Spencer Thomas (LZW implementation)
Initial Release: 1984
MIME Type: application/x-compress

What is a 7z file?

The 7z format is a compressed archive container created by Igor Pavlov in 1999, characterized by an open architecture and high compression ratios utilizing the LZMA and LZMA2 algorithms. It supports file sizes up to 16 exbibytes (2^64 bytes), Unicode file names, and strong AES-256 encryption, with solid compression capabilities to enhance efficiency for similar file sets. Distributed under the GNU LGPL, the format's modular design accommodates various pre-processing filters and encryption methods, establishing it as a primary standard for high-efficiency data archival.

How to open a 7z file

While Windows 11 builds utilizing the libarchive project offer native support, earlier Windows versions require the official open-source 7-Zip utility or alternatives like WinRAR and PeaZip for extraction. macOS users typically rely on third-party software such as The Unarchiver or Keka, whereas Linux distributions handle 7z archives via the p7zip package accessed through the command line or GUI managers like File Roller.

7z Technical Info

Full Name: 7z Archive Format
Developed By: Igor Pavlov
Initial Release: 1999
MIME Type: application/x-7z-compressed

More tools

Related conversions

TAR.Z to RAR

TAR.Z to TAR

TAR.Z to TAR.BZ2

TAR.Z to TAR.GZ

TAR.Z to ZIP

ACE to 7Z

ALZ to 7Z

ARC to 7Z

Why RunConvert

The fastest way to convert any file

Purpose-built for speed, privacy, and breadth of format support.

Convert TAR.Z to 7Z in seconds

Every TAR.Z to 7Z conversion runs on our servers, so your device stays fast and the output quality stays intact.

Fast, cloud-powered

No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.

Secure & private

Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.

Free - no account needed

Convert without creating an account - no credit card, no trial clock. Sign in only if you want history and higher daily limits.

Developer API

Convert TAR.Z to 7Z via API

Automate TAR.Z to 7Z conversions in three steps: create a job, upload your file, then poll for the result.

# 1. Create job
curl -X POST https://api.runconvert.com/v3/jobs \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "tag": "tar.z-to-7z",
    "tasks": {
      "upload-file": {
        "operation": "import/upload"
      },
      "convert": {
        "operation": "convert",
        "input": "upload-file",
        "output_format": "7z"
      },
      "export-result": {
        "operation": "export/url",
        "input": "convert"
      }
    }
  }'

# 2. Upload your file (use upload_url from the response)
curl -X PUT "$UPLOAD_URL" --upload-file input.tar.z

# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$JOB_ID?include=tasks \
  -H "Authorization: Bearer YOUR_API_KEY"

Replace YOUR_API_KEY with your RunConvert API key. Get your free API key at runconvert.com/api.