TAR.BZ2 to TGZ Converter

How to Convert TAR.BZ2 to TGZ Online

1. Upload Your TAR.BZ2 File: Drag and drop or click "+ Add Files" to load .tar.bz2 (or .tbz2 / .tb2) archives from your device. Batch upload is supported — recompress a folder of old backups, kernel sources, or CRAN package mirrors in a single pass.
2. Pick Combine? — Single Archive vs Individual Archives: Under Advanced Options, leave Individual Archives to produce one .tgz per uploaded .tar.bz2 (the default for archive-to-archive jobs), or switch to Single Archive to merge every upload into one combined .tgz. Internal compression level uses gzip's default -6 setting.
3. (Optional) Inspect the result: TGZ is identical to TAR.GZ — the .tgz extension is just the legacy 8.3-filename short form. Either name extracts with tar -xzf on Linux/macOS or 7-Zip / WinRAR on Windows without any flag change.
4. Convert and Download: Click "Convert" and grab each .tgz individually or as a bundled ZIP. No sign-up, no watermark, no file-count cap.

Why Convert TAR.BZ2 to TGZ?

.tar.bz2 (bzip2-compressed tarball) was a common Linux distribution format from the late 1990s through the mid-2010s because bzip2 squeezes about 15-20% more out of source code than gzip. The trade-off is speed: gzip's DEFLATE algorithm decompresses roughly 3-6x faster than bzip2's Burrows-Wheeler transform on the same hardware, and that gap matters every time a CI pipeline or a user has to unpack the file. Recompressing to .tgz keeps the same tar archive structure (permissions, symlinks, ownership, mtimes) but swaps in gzip for faster extraction at minor size cost.

• Faster CI/CD pipelines — Build systems that fetch dependencies as tarballs spend real wall-clock time decompressing them. A 200 MB bzip2 source tarball can take 15-25 seconds to unpack on a build runner; the same content as .tgz typically lands in 4-6 seconds, which compounds across hundreds of CI jobs per day.
• Wider tooling support out of the box — gzip shipped with virtually every Unix since the early 1990s, and Windows tools like 7-Zip, PeaZip, and the built-in tar.exe in Windows 10+ all read .tgz natively. bzip2 support is universal on Linux/macOS but more variable on locked-down corporate Windows installs.
• Streaming-friendly — Gzip-compressed tarballs can be piped through curl... | tar -xz for one-shot download-and-extract on bandwidth-constrained boxes. bzip2 works the same way in principle but is significantly more CPU-bound, which slows down small VPS instances.
• Better fit for already-compressed payloads — If your tar contains JPEGs, MP4s, or other already-compressed assets, bzip2's slower algorithm gives almost no size benefit over gzip on that content. Converting to .tgz drops the CPU cost with negligible size penalty.
• Distribution norm shift — Modern Linux distros standardized on .tar.gz (Debian source packages, Node.js releases, Python sdist) or .tar.xz (the GNU project's archives since 2014, kernel.org). .tar.bz2 is increasingly legacy; converting old mirrors to .tgz aligns with what current tooling expects.
• Cross-platform sharing — Sending a colleague on Windows a .tgz they can open with the built-in tar command beats sending .tar.bz2 and asking them to install extra tooling.

Going the other direction or to a different format? See TGZ to TAR.BZ2 for the reverse, TAR.BZ2 to TAR.GZ (the long-form equivalent of .tgz), or TAR.BZ2 to ZIP if your recipient is on Windows without tar. To just unpack the contents, use Extract TAR.BZ2 or Extract TGZ.

TAR.BZ2 vs TGZ — Format Comparison

Compression Tool Quick Guide

If you're recompressing for size rather than speed, consider .tar.xz instead — see TAR.BZ2 to TAR.XZ. If you need the broadest Windows compatibility without any tar tooling, use TAR.BZ2 to ZIP.

Frequently Asked Questions

Is.tgz the same thing as.tar.gz?

Yes — byte-for-byte identical content, just two extensions for the same gzip-compressed tarball. The .tgz short form dates back to the 8.3 filename limit on MS-DOS and early Windows, where .tar.gz ran out of room. Both extract with the same command (tar -xzf file.tgz or tar -xzf file.tar.gz) and both are valid in modern tooling. If you need the long-form name instead, use TAR.BZ2 to TAR.GZ — it produces the same bytes with the alternate suffix.

Will I lose data converting from bzip2 to gzip?

No file contents are lost. The conversion fully decompresses the bzip2 stream into the original tar archive, then recompresses the same tar bytes with gzip. File names, permissions (chmod bits), ownership (UID/GID), symbolic links, hard links, modification times, and extended attributes inside the tar layer all survive the round-trip. The only thing that changes is the outer compression wrapper.

How much bigger will my.tgz be compared to the.tar.bz2?

Typically 10-20% larger for plain text or source code, sometimes negligible for content that's already compressed (JPEGs, MP4s, PDFs). In the rootusers Linux-kernel benchmark, the same source tree compressed to 96 MB with bzip2 -9 versus 123 MB with gzip -6 — about a 28% size bump going from bzip2 to gzip on a worst-case text-heavy payload. Real-world deltas on mixed archives are smaller.

Why would I want gzip if bzip2 compresses better?

Decompression speed. Bzip2's Burrows-Wheeler transform is roughly 3-6x slower to unpack than gzip's DEFLATE on the same hardware. For a 1 GB archive that gets pulled by every CI build, every container image bake, or every server provision, the extraction time difference dominates the small bandwidth savings. Gzip is also more universally supported on locked-down corporate Windows boxes where bzip2 isn't part of the default toolchain.

Does the converter preserve Unix file permissions and symlinks?

Yes. The conversion operates on the outer compression layer only — the inner tar archive is byte-identical between the input .tar.bz2 and the output .tgz. POSIX permissions, ownership, symlinks, hard links, sparse-file metadata, and pax extended headers all pass through unchanged. If you extract the .tgz on a system that supports those attributes, you'll get the same tree the original .tar.bz2 would have produced.

What's the difference between.tbz2,.tb2, and.tar.bz2?

All three are the same bzip2-compressed tarball — .tbz2 is the 4-character short form, .tb2 is a 3-character variant used on legacy 8.3 filesystems, and .tar.bz2 is the verbose form. This converter accepts any of them. Output is .tgz by default; for the long-form .tar.gz name, use TAR.BZ2 to TAR.GZ.

Can I just rename.tar.bz2 to.tgz instead of converting?

No — that produces a corrupt archive. The extension labels the compression wrapper; the bytes inside .tar.bz2 are bzip2-compressed, and tar -xzf (gzip mode) will refuse them with a "not in gzip format" error. You have to actually decompress with bzip2 and recompress with gzip, which is what this tool does in one step.

How do I extract a.tgz on Windows without installing anything?

Windows 10 (October 2018 update / 1809) and Windows 11 ship tar.exe built in. Open Command Prompt or PowerShell and run tar -xzf yourfile.tgz. For a graphical option, 7-Zip and PeaZip both read .tgz natively. If you'd rather not deal with tar at all, convert to ZIP instead with TAR.BZ2 to ZIP — File Explorer's built-in "Extract All" handles ZIPs directly.

Is anything uploaded to your servers?

files are processed on our servers and deleted automatically after a few hours and deleted after the session ends. No account is required and there are no watermarks, file-count limits, or hidden Pro tiers. If you only need to peek inside the original .tar.bz2 without recompressing, use Extract TAR.BZ2 to pull out the contents directly.