TAR to JAR Converter

Repackage TAR archives as JAR format online for free

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Simple Workflow

Converting TAR to JAR takes just a few clicks — upload your archive, select the format, and download. No command-line knowledge or Java tools required.

Cloud-Powered

All processing happens on our servers, meaning your local device resources stay completely free. Even large TAR archives convert without slowing down your machine.

TAR to JAR in Seconds

Repackage your uncompressed TAR contents into compressed JAR format quickly. The conversion preserves your directory layout and adds ZIP-based deflate compression.

How to convert TAR to JAR

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

Choose jar or any other format you need as a result (more than 200 formats supported)

Let the file convert and you can download your jar file right afterwards

About formats

TAR (Tape Archive) is a Unix archive format originating in Version 7 Unix) at AT&T Bell Labs in January 1979, originally designed for writing file backups to magnetic tape drives. Unlike ZIP or RAR, TAR is a pure archiving format that concatenates multiple files into a single stream without applying compression — each file is preceded by a 512-byte header block containing the filename, permissions, ownership, size, modification time, and checksum, followed by the file data padded to 512-byte boundaries. The format has evolved through several standards: the original V7 format, the POSIX.1-1988 ustar format (extending path lengths and adding support for more file types), and the POSIX.1-2001 pax format supporting extended attributes, arbitrary-length paths, and large file sizes. TAR is almost always paired with a compression tool — gzip (.tar.gz/.tgz), bzip2 (.tar.bz2/.tbz2), xz (.tar.xz), or others — producing a two-layer structure where compression operates on the entire stream for maximum efficiency. One advantage is exceptional Unix metadata fidelity — TAR preserves permissions, ownership, symbolic links, hard links, device files, and extended attributes with greater precision than most competing formats. Universal availability is another core strength: tar is a POSIX-mandated utility present on every Unix-like system, and tools on Windows and macOS handle TAR files natively. TAR remains the standard distribution format for source code, Linux filesystem images, container layers, and system backups.

Developer: AT&T / Unix

Initial release: January 1979

JAR (Java Archive) is a package file format based on ZIP, developed by Sun Microsystems) and introduced with JDK 1.1 in January 1996 for distributing Java class files, associated metadata, and resources as a single deployable unit. A JAR file is structurally a ZIP archive with an added META-INF/MANIFEST.MF file — a text manifest that declares the archive's main class entry point, classpath dependencies, package versioning, and digital signature information. The Java runtime loads classes directly from JAR files without extraction, using the ZIP directory for efficient random access to individual entries. JAR archives can be made executable: specifying a Main-Class attribute in the manifest allows launching the application with a simple java -jar command. The format supports code signing through the JDK's jarsigner tool, embedding digital signatures that verify the authenticity and integrity of the archive's contents. One advantage is the Java ecosystem's native integration — the JVM, build tools (Maven, Gradle), application servers, and IDEs all treat JAR files as first-class artifacts, enabling a unified build-deploy-run pipeline. The format's backward compatibility with standard ZIP) tools is another practical strength: any ZIP utility can inspect JAR contents, while the manifest and signing layers add Java-specific capabilities on top. JAR remains the fundamental distribution unit for Java libraries and applications across enterprise, mobile, and embedded deployments.

Developer: Sun Microsystems

Initial release: January 23, 1996

Frequently Asked Questions

Why convert TAR to JAR?

JAR is the standard package format for Java applications and libraries. If you have Java resources bundled in a TAR, converting to JAR makes them ready for Java toolchains.

What software opens JAR archives?

Any ZIP-capable tool opens JAR since it is ZIP-based. For Java-specific use, the JDK jar utility or IDEs like IntelliJ and Eclipse handle JAR files natively.

Does the conversion add compression?

Yes. TAR stores data uncompressed, while JAR uses ZIP-style deflate compression internally — so the resulting file will typically be smaller than the original TAR.

Can I batch convert several TAR archives to JAR?

Absolutely. Convertio supports batch uploads, allowing you to queue multiple TAR files and convert them all to JAR in one go.

Is this service free?

Yes — you can convert TAR to JAR for free on convertio.co with no account required. Just upload, convert, and download.

Does the converter work on mobile devices?

It does. The converter is entirely browser-based, so smartphones and tablets running any modern browser can use it without limitations.

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ZIP to JAR

RAR to JAR

7Z to JAR

TAR to JAR

TGZ to JAR

DEB to JAR

RPM to JAR

CAB to JAR

ARJ to JAR

TBZ2 to JAR

ACE to JAR

ALZ to JAR

ARC to JAR

CPIO to JAR

LHA to JAR

TAR.7Z to JAR

TAR.BZ to JAR

TAR.LZ to JAR

TAR.LZMA to JAR

TAR.LZO to JAR

TAR.XZ to JAR

TAR.Z to JAR

TAR to JAR Quality Rating

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