There are several ways to extract the Tar files Mac. The first way does not require any skills from you and is the built-in macOS utility called Archive Utility. However, there are situations when the built-in utility cannot open the Tar file on Mac as well as cope with other well-known formats, such as RAR. In these situations, it is recommended to use third-party applications like Commander One.
Commander One is an excellent file manager with a set of interesting and useful features. It compresses and decompresses TAR files easily as well as works with the rest of popular formats, including RAR. Also using the application you can copy/move files from one archive to another as well as delete files and create folders directly inside an archive, search and browse through the content of the archive without extracting it.