This template can be used to show measurement quantities as primary and converted secondary units ( or ranges ) , with optional rounding , wikilinks , abbreviation , or US spellings , and various separators including : parentheses , slash , `` or '' , hyphens , comma , `` to '' or dashes . This template shows measurement quantities as primary and converted secondary units ( or ranges ) , with optional rounding , wikilinks , abbreviation , or US spellings , and various separators including : parentheses '' ( ) '' , slash , `` or '' , hyphens , comma , `` to '' or dashes .