Check the total content size of a tar gz file

Question

How can I extract the size of the total uncompressed file data in a .tar.gz file from command line?

Answer 1

A tar file is uncompressed until/unless it is filtered through another program, such as gzip, bzip2, lzip, compress, lzma, etc. The file size of the tar file is the same as the extracted files, with probably less than 1kb of header info added in to make it a valid tarball.