7Z to TAR.GZ Converter

Convert 7Z to TAR.GZ online for free. Fast, secure archive conversion that preserves folder structure and file integrity. No software installation required.

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7Z vs GZ: Side-by-side

Technical comparison of the two formats — useful for deciding which to use, or for confirming what changes during conversion.

Property	7Z	GZ
Full name	7-Zip Archive	GNU Zip
Year introduced	1999	1992
Developer / standard body	Igor Pavlov	GNU Project
MIME type	application/x-7z-compressed	application/gzip
File extension	.7z	.gz
Compression	LZMA / LZMA2 (best ratio of common formats)	DEFLATE (single-file compression)
Color / data depth	N/A	N/A
Max dimensions / size	16 EB file size	4 GB uncompressed (typical)
Transparency	No	No
Animation	No	No
Standard / specification	7-Zip (open)	IETF RFC 1952
Best for	Maximum compression — typically 30–50% smaller than ZIP	Single-file compression, often inside .tar.gz archives

About the 7Z Format

7Z (7-Zip Archive) is an open-source archive format created by Igor Pavlov in 1999 for the 7-Zip compression program. It uses the LZMA2 compression algorithm, which achieves 30-70% better compression ratios than ZIP on most file types. This makes 7Z the preferred choice when minimizing archive size is the top priority, particularly for large software distributions and data backups.

Beyond superior compression, 7Z supports AES-256 encryption with the option to encrypt file headers as well, hiding even the names of archived files. It also supports solid compression, which compresses multiple files together as a single data stream for even better ratios. The main drawback is that 7Z requires 7-Zip or a compatible third-party tool to create and extract, as it is not natively supported by most operating systems. It is best suited for scenarios where recipients can install 7-Zip and maximum compression is desired.

7Z to GZ FAQ

Quick answers about compatibility, quality, metadata handling, and the most common reasons to convert 7Z files to GZ.

How do I convert 7Z to GZ without extracting files manually?

Upload your 7Z file to iFormat and click Convert. Every file and folder inside is extracted and re-packaged as GZ with the folder structure intact — no need to extract, reorganise, and re-compress yourself. It's free and needs no account.

Does converting 7Z to GZ keep my folder structure?

Yes. All files, nested folders, and the hierarchy inside your 7Z archive are preserved when they're re-compressed into GZ, so the contents open exactly as they were organised.

Why convert 7Z to GZ?

7Z is a high-ratio LZMA2 archive good for maximum compression. GZ is gzip compression best for compressed single files on Unix. Convert when the recipient's software opens GZ more easily, or when you need its compression or compatibility.

Are the files inside the archive changed during conversion?

No — the individual files are only re-compressed, not modified. A document, photo, or spreadsheet inside your 7Z archive is byte-for-byte identical after it's re-packaged as GZ.

Can I convert 7Z to GZ on Mac, Windows, or Linux?

Yes. iFormat works in any modern browser on any operating system — no need to install WinRAR, 7-Zip, or any other desktop tool. Upload the 7Z archive, convert to GZ, and download.

Is there a file size limit for 7Z to GZ conversion?

The free plan supports files up to 50 MB, which covers the large majority of 7Z files. For longer or higher-resolution files, Starter raises the limit to 100 MB, Plus to 1 GB, and Pro to 5 GB.

Archive Format Guides for 7Z to TAR.GZ Converter

Read compatibility and compression guides for ZIP, 7Z, RAR, TAR, and related archive workflows.

File Compression Formats Explained — ZIP, RAR, 7Z, GZIP, TAR & More

A complete guide to file compression and archive formats. Compare ZIP, RAR, 7Z, GZIP, TAR, and BZIP2 by compression ratio, speed, and compatibility.

ZIP vs RAR vs 7Z vs TAR — Which Archive Format and When

ZIP vs RAR vs 7Z vs TAR compared. Compression ratio, compatibility, speed. When to use each archive format. Practical guide with real-world examples.

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