Convert to 7Z

Convert archives to 7Z online, for free, with nothing to install.

ZIP, RAR, TAR.GZ and 34 other archive formats can be converted to 7Z: drop your files above, and 7Z is already chosen as the output. Most conversions run right in your browser, so your files stay on your device.

What is a 7Z file?

7Z – 7-Zip archive. 7Z is the native format of the open-source 7-Zip. It packs files tighter than ZIP, mostly thanks to LZMA2 compression, and supports AES-256 encryption of both contents and file names.

7Z Converter →

How to convert files to 7Z

  1. Click Select File, or drop your archives anywhere on this page. Any of the 37 supported formats works.
  2. 7Z is already chosen as the output on this page.
  3. Click Convert, then Download when it's done.

7Z at a glance

7Z
TypeArchive
HoldsMany files and folders
CompressionLZMA2 (also LZMA, PPMd, BZip2)
EncryptionAES-256, file names too
Created byIgor Pavlov (7-Zip), 1999
Best forSmall archives with strong encryption

Frequently asked questions

Why convert to 7Z?

7Z is the native format of the open-source 7-Zip. It packs files tighter than ZIP, mostly thanks to LZMA2 compression, and supports AES-256 encryption of both contents and file names. Best for: Small archives with strong encryption.

Which files can be converted to 7Z?

ACE, ALZ, ARC, ARJ, BZ, BZ2, CAB, CPIO, DEB, DMG, GZ, IMG, ISO, JAR, LHA, LZ, LZMA, LZO, RAR, RPM, RZ, TAR, TAR.7Z, TAR.BZ, TAR.BZ2, TAR.GZ, TAR.LZO, TAR.XZ, TAR.Z, TBZ, TBZ2, TGZ, TZ, TZO, XZ, Z, ZIP.

Is converting to 7Z free?

Yes. Everyone gets 25 free credits a day, with no account needed. Conversions on our server use one credit per started minute of work, so most cost a single credit. Credits reset at midnight UTC.

Are my files uploaded anywhere?

Files up to 200 MB never leave your device: ConvertKitty runs 7-Zip inside your browser. Only larger files, or formats your browser cannot handle, are sent to our server, over an encrypted connection, and deleted 72 hours after the conversion. The button says "Upload and convert" whenever that happens.

Convert to 7Z from

Updated