LZMA to 7Z Converter

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

To convert LZMA to 7Z, select or drop your .lzma file above, check that 7Z is chosen as the output, and click Convert. Files up to 200 MB are converted right in your browser, so they never leave your device.

What is an LZMA file?

LZMA – LZMA compressed file. LZMA is a single file compressed with the original LZMA "alone" format from the 7-Zip project, since replaced by XZ.

LZMA Converter →

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 LZMA to 7Z

  1. Click Select File, or drop your .lzma files anywhere on this page. You can add several at once.
  2. Check that 7Z is chosen as the output format. On this page it is picked for you.
  3. Click Convert. When a file has to go to our server, the button says Upload and convert instead.
  4. Click Download next to each file when it's done.

LZMA vs 7Z: how they compare

LZMA7Z
TypeCompressed single fileArchive
HoldsOne fileMany files and folders
CompressionLZMALZMA2 (also LZMA, PPMd, BZip2)
EncryptionNoneAES-256, file names too
Created by—Igor Pavlov (7-Zip), 1999
Best forOpening older LZMA filesSmall archives with strong encryption

Good to know

  • an LZMA file holds a single compressed file, so the result is a 7Z archive with that one file in it.
  • LZMA is an old format that today's computers rarely open by themselves. 7Z files are much easier to open, share and keep.
  • Symbolic links, hard links and special files (such as devices) are left out of the result for safety; the page tells you when it does this.

Frequently asked questions

Is converting LZMA 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 LZMA 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.

How large can the LZMA file be?

Files up to 200 MB are converted right in your browser. Larger files, up to 1 GB, are converted on our server.

Will the folders inside my LZMA be kept?

an LZMA file holds just one file, so there are no folders to keep: the 7Z will contain that one file.

Can I convert several LZMA files at once?

Yes. Add as many files as you like; they are converted one after another, and each one gets its own Download button.

Convert LZMA to other formats

Convert other files to 7Z

Just need the files inside?

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