7Z Converter

How to Convert 7Z to Any Format

1. Upload Your 7Z File: Drag and drop your archive or click "+ Add Files". The converter accepts .7z files, and you can drop several at once — each is repacked separately, or combined, depending on the Combine setting below.
2. Pick an Output Format: Choose the target archive from the format selector — ZIP (the default, for maximum compatibility), TAR, TAR.GZ, TGZ, TAR.XZ, TAR.BZ2, or TB2. ZIP is selected by default because it opens natively on Windows and macOS without extra software.
3. Choose How Multiple Files Combine (Optional): If you uploaded more than one archive, the Combine control lets you pick "Single Archive" to merge everything into one output file, or "Individual Archives" to get a separate converted file for each upload.
4. Convert and Download: Click "Convert". Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark, never shared.

Popular 7Z Conversions

• 7Z to ZIP — the most common one: ZIP opens natively on Windows and macOS, so anyone can extract it without installing 7-Zip
• 7Z to TAR — an uncompressed tarball for Unix and Docker workflows that compress separately
• 7Z to TAR.GZ — the standard gzip-compressed tarball for Linux distribution and tar -xzf
• 7Z to TGZ — the same gzip tarball under the short .tgz extension some tools expect
• 7Z to TAR.XZ — XZ uses the same LZMA family as 7z, so it keeps compression tight while staying Unix-native
• 7Z to TAR.BZ2 — a bzip2-compressed tarball still common in older Linux source releases

Why Convert a 7Z File?

The 7z format was created by Igor Pavlov and first released in 1999 as the native archive of the open-source 7-Zip utility. It is an open format — its specification has shipped with 7-Zip's source code since 2015 — and it defaults to LZMA/LZMA2 compression, a variant of the LZ77 algorithm that typically packs files tighter than the Deflate algorithm inside a standard ZIP. 7-Zip's own documentation notes its compressor produces archives roughly 2-10% smaller than PKZip and WinZip for the same data, and the gap is often larger on highly compressible content. It also supports AES-256 encryption.

The catch is reach. ZIP is built into Windows and macOS, so a recipient can double-click and extract it with zero setup. A .7z file is not: Windows File Explorer and the macOS Archive Utility cannot open it natively, so whoever receives it has to install 7-Zip, The Unarchiver, or a compatible tool first. That single compatibility gap is the main reason people convert. Common cases:

• Sending an archive to someone who doesn't have 7-Zip — repack to ZIP so it opens on any stock Windows or Mac without extra software.
• Moving into a Unix or CI/CD pipeline — TAR, TAR.GZ, and TAR.XZ are the formats tar, Docker, and most Linux package tooling expect; TAR.XZ keeps the LZMA-style compression 7z users are used to.
• Uploading where 7z isn't accepted — some web forms, app stores, and email filters allow ZIP but reject or mishandle .7z.
• Long-term or cross-tool archival — a widely-readable container like ZIP or a plain TAR is a safer bet that the file still opens years from now.

Converting an archive is a re-pack, not an on-disk extract: xconvert decompresses the 7z on the server, then recompresses the same files into the target container. The files inside are unchanged.

7Z vs. Its Common Targets

Frequently Asked Questions

Why won't my 7z file open?

Almost always because the computer doesn't have a tool that reads the 7z format. Unlike ZIP, the 7z format is not built into Windows File Explorer or the macOS Archive Utility, so double-clicking a .7z does nothing useful until you install 7-Zip (Windows) or an unarchiver app (macOS). The simplest fix if you just need the contents is to skip installing anything and extract the 7z online to pull the files straight out. If you instead need a sharable archive that opens everywhere, convert it to 7Z to ZIP. (A truncated or corrupted download can also fail to open, in which case re-downloading the original is the fix.)

Will I lose any quality or data converting 7Z to ZIP?

No. Archive conversion is lossless for the files inside — they are decompressed and then recompressed bit-for-bit identically, so a document or image comes out exactly as it went in. What changes is the wrapper and the compression method, not the contents. The only practical trade-off is size: because ZIP's Deflate algorithm is less aggressive than 7z's LZMA, the resulting ZIP is usually somewhat larger than the original 7z.

Is a converted ZIP bigger than the original 7Z?

Usually a little, yes. 7z's default LZMA/LZMA2 compression typically squeezes data tighter than the Deflate algorithm a standard ZIP uses, so re-packing 7z to ZIP often grows the file modestly. In our testing, a 7z archive of mixed text and source files re-packed to ZIP came out roughly 10-25% larger, with the exact gap depending on how compressible the contents are — already-compressed media like JPEGs or MP4s barely change. If keeping the file small matters more than universal compatibility, convert to 7Z to TAR.XZ, which uses the same LZMA family as 7z.

What's the best format to convert 7Z to for sharing with anyone?

ZIP. It is the only common archive format that both Windows and macOS open natively with a double-click, so the person receiving it needs no extra software. TAR-based formats (TAR.GZ, TAR.XZ) are great inside Linux and developer workflows but are awkward for a typical Windows or Mac recipient. When in doubt, convert 7Z to ZIP.

Can I convert several 7Z files at once?

Yes. Drop in multiple .7z files and use the Combine control: "Single Archive" merges them all into one output file, while "Individual Archives" produces a separate converted file per upload that you download together. There's no fixed file-count limit; the practical ceiling is total upload size and your connection speed.

Are my files private when I convert a 7Z archive here?

Yes. Your archive is uploaded over an encrypted (TLS) connection, repacked on our servers, and then deleted automatically after a few hours. There's no sign-up, no watermark, and files are never shared or made public. Note that converting does not preserve a 7z's password encryption — if your 7z is AES-256 encrypted, you'll need to provide the contents unencrypted for repacking.