Soundex Calculator: Find a Surname's Soundex Code

Soundex groups surnames that sound alike under one code: Smith, Smyth and Schmidt are all S530. The U.S. government used it to index the 1880 through 1930 censuses, and many genealogy sites offer a Soundex search option. For Jewish and Eastern European surnames, the Daitch-Mokotoff system (available from JewishGen) handles those spellings better. See Why Can't I Find My Ancestor in the Index?