Convert TAR to 7Z online

To convert TAR to 7Z, upload the TAR file, start the conversion and download the result: Converter.now writes a 7Z archive. Files and folders are unpacked and repacked into 7Z; the files inside are not changed.

◈ Encrypted transfer◷ Short retention⊘ No watermark◎ Works on every device

TAR to 7Z at a glance

Converts: TAR archive format → 7Z archive format
Output: A 7Z archive
Compression: TAR: uncompressed → 7Z: lossless
Engine: Python archive tools and 7-Zip
Privacy: Private download link; files are deleted after 6 hours. No account needed.

TAR to 7Z: The archive extraction and repackaging route explained

Unpacking TAR exposes its entries, and a new 7Z package is built from their filenames and folder paths. Compression gets rebuilt from scratch, and archive-level encryption, comments, or recovery records should never be assumed to carry over. TAR is read as a sequential member stream whose path, permission, link, owner, and timestamp records are separate from any outer compression layer. The 7Z package can use solid compression and encrypted headers, trading excellent ratios for extractor compatibility and slower access to individual members.

Read structure - An uncompressed archive preserving a Unix-style folder tree, names, and file metadata. Rebuilt structure - A compressed archive with strong ratios and optional AES encryption.

Not quite the pair you need? Browse more ways to convert TAR files or the 7Z converter hub for every route into and out of 7Z.

Background reading: lossy vs. lossless compression covers why repeated lossy saves compound damage.

TAR

TAR archive format

Used for packaging files and folder structures.

Family: Archives
MIME: application/x-tar

→

7Z

7Z archive format

Designed for compressed storage for a group of files and folders.

Family: Archives
MIME: application/x-7z-compressed

Checking the 7Z result before you trust it

Record the TAR evidence before conversion

List and extract the archive, then compare paths, link targets, permissions, and file counts.

Test the 7Z file in its receiving workflow

Extract the result with the recipient's actual archive app and compare the complete folder tree.

TAR source facts versus 7Z output requirements

What can fail when TAR archive format is interpreted

TAR alone may be large, and permissions, symbolic links, or path conventions can behave differently off Unix.

What 7Z archive format cannot safely promise

Some built-in operating-system extractors cannot open 7Z packages, and encrypted headers can hide filenames.

How the 7Z writer handles this route

a compressed archive with strong ratios and optional AES encryption is what gets written, labeled as application/x-7z-compressed. Whether that actually opens depends on the receiving application, not on the file extension.

The delivery decision for this TAR to 7Z route

Use 7Z when the recipient's archive utility cannot reliably open TAR, then validate the extracted tree rather than judging only the new package size.

What changes between the TAR model and the 7Z deliverable

Files and folders are unpacked and repacked into 7Z; the files inside are not changed.
Treat TAR-specific metadata fields as optional in the 7Z result until you have actually confirmed they survived.