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Create ZIPUnzip / ExtractRAR Extractor7Z ExtractorTAR.GZ ExtractorCompress Files (7Z)Password-Protect ZIPArchive ConverterCreate TAR.GZ

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Convert ZIP to 7Z

Convert ZIP archives to 7Z in one step: the archive is extracted and re-packed inside your browser. 7Z gives the smallest file size and strong AES-256 encryption.

  • No upload — 100% private
  • Fast, lossless when possible
  • Free & unlimited
  • Works on iPhone & Android
    Compression

    How to convert ZIP to 7Z

    1. 1

      Tap Choose archive and pick your ZIP file.

    2. 2

      Check that 7Z is selected and choose the compression level.

    3. 3

      Press Convert archive. Enter the password if the original is protected.

    4. 4

      The 7Z downloads automatically.

    ZIP vs 7Z

    ZIP7Z
    Full nameZIP archive7-Zip archive
    Can create hereYesYes
    Developed byPhil Katz (PKWARE)Igor Pavlov
    Introduced19891999
    Opens on iPhone✓ Built in✕ Needs an app (or this site)
    Opens on Android✓ Built in✕ Needs an app (or this site)
    Opens on Windows✓ Built in◐ Newer versions only
    Opens on Mac✓ Built in✕ Needs an app (or this site)

    ZIP: ZIP is the universal archive format. It bundles many files and folders into one compressed file, and every computer and phone can open it without extra software.

    7Z: 7Z is the 7-Zip archive format. Its LZMA2 compression usually makes files 10–40% smaller than ZIP, and it supports strong AES-256 encryption including encrypted file names.

    Frequently asked questions

    Will my files change when converting ZIP to 7Z?
    No. Archive formats are lossless, so every file is restored bit for bit and packed again.
    My ZIP is password-protected — can I convert it?
    Yes. Enter the password when asked. You can also set a new password on the output (ZIP and 7Z).
    Is there a size limit?
    No fixed limit. It depends on your device's memory: several GB on computers, a few hundred MB on phones.
    Are my files uploaded?
    No. Everything runs in your browser with 7-Zip compiled to WebAssembly.

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    Convert ZIP to other formats

    ZIP to TARZIP to TAR.GZZIP to TAR.BZ2ZIP to TAR.XZ

    Convert other archives to 7Z

    RAR to 7ZTAR to 7ZTAR.GZ to 7ZTAR.BZ2 to 7ZTAR.XZ to 7ZGZ to 7ZBZ2 to 7ZXZ to 7ZISO to 7ZCAB to 7ZJAR to 7ZLZH to 7Z

    Helpful tools

    Unzip / ExtractOpen ZIP, RAR, 7Z, TAR.GZ, ISO, CAB and 30+ archive types online. Preview the files, save…Create ZIPZip files and whole folders online, free. Choose compression level, add AES-256 password…Compress Files (7Z)Shrink files and folders with 7-Zip Ultra (LZMA2) compression — often 30–70% smaller for…