Convert to 7Z

7Z is 7-Zip's open high-ratio archive format; LZMA typically compresses 10-30% better than ZIP's DEFLATE, suiting large-file archiving and distribution. This group unpacks ZIP, TAR and TGZ then repacks as 7Z — 3 conversion directions.

Directory structure is fully preserved. 7Z requires software like 7-Zip or Bandizip to open — desktops have no native support. Choose ZIP when zero-install compatibility matters.

ZIP

ZIP→7Z

Repacks ZIP into 7z (LZMA compression), typically shrinking size another 10–30% for long-term archiving and bandwidth-limited distribution.

TAR

TAR→7Z

Repacks TAR into 7z (LZMA), adding a compression layer to plain archives to reduce server backup storage.

TGZ

TGZ→7Z

Unpacks .tar.gz and recompresses as 7Z with LZMA (typically 10–30% smaller than gzip), preserving the directory structure.

View all tools