Free Online Archive Converter
Convert between archive formats online for free. Supports ZIP, 7Z, RAR, TAR and TAR.GZ. Fast, secure, browser-based conversion with no software to install.
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ファイルと選択した出力形式を確認しています。
About Free Online Archive Converter
Archive format affects compression ratio, extraction compatibility, and platform support. ZIP is the most widely used format — it opens natively on Windows, macOS, and Linux without any extra software. 7Z uses the more advanced LZMA2 algorithm, which typically achieves 10-30 % better compression than ZIP, but requires tools like 7-Zip or PeaZip on some operating systems. RAR offers strong compression and built-in error recovery, though extracting it requires WinRAR or a compatible tool. TAR is the traditional Unix archiving format that bundles files without compression on its own. It is often paired with gzip or bzip2 to create .tar.gz or .tar.bz2 archives used in Linux and server environments.
All major archive formats preserve the original folder structure and file names. Built-in integrity checks confirm that extracted files are identical to the originals — nothing is lost or corrupted during conversion. When choosing a format, think about your audience: ZIP is the safest choice for sharing because every modern computer can open it. 7Z is ideal when minimising file size matters most, such as distributing large datasets or backing up projects. TAR remains the native standard for Linux servers and deployment pipelines.
If you already know the conversion you need, jump to a dedicated tool: RAR to ZIP, 7Z to ZIP, or 郵便番号からタールまで. If you are comparing formats or need a general-purpose archive converter, start here.
How to Convert Archives Online
Convert between ZIP, 7Z, RAR and TAR archive formats from your browser. Free for files up to 10 MB. No registration, no watermarks.
アーカイブ ファイルをコンバータにドロップするか、クリックして参照します。 ZIP、7Z、RAR、TAR、TAR.GZ ファイルを受け入れます。単一のアーカイブをアップロードするか、複数のファイルを一度にバッチ変換します。
Choose your output: ZIP for universal compatibility, 7Z for maximum compression, or TAR/TAR.GZ for Linux and macOS. Conversion preserves your folder structure and file integrity.
Click Download and your converted archive saves directly to your device. All uploaded files are automatically deleted from our servers within 24 hours to protect your privacy.
Why Choose Our Archive Converter
ZIP is supported by every operating system. Convert RAR or 7Z files to ZIP so anyone can open them without special software — no WinRAR or 7-Zip installation required on the recipient's end.
7Z offers up to 40% better compression than ZIP. Convert large file collections to 7Z for smaller file sizes and faster transfers, saving bandwidth and storage space on cloud drives.
TAR and TAR.GZ are the standard on Linux servers. Convert ZIP or 7Z to TAR for deployment scripts, backups and package distribution across Unix-based systems.
Received a RAR file but don't have WinRAR? Convert it to ZIP online and open it natively on Windows, macOS or Linux — no desktop application needed.
Converting between archive formats keeps your directory hierarchy, file names, and permissions intact. Nested folders and subfolders are maintained exactly as they were in the original archive.
ファイルのフォルダーを電子メールで送信する必要がありますか? 7Z に変換すると、ZIP と比較して 30 ～ 40 % 圧縮できるため、添付ファイルの制限を超えないようにすることができます。 7Z を開けない受信者の場合は、ユニバーサル アクセスのために ZIP に変換し直します。