http://www.hollandonrails.nl/articles/521-Rails-gem-Localized-pluralization-with-i18n As you are working on an internalization Rails application, you are maybe using "Globalize2":http://github.com/joshmh/globalize2 along with "I18n":http://github.com/svenfuchs/i18n to translate models (e.g. categories). The end-user is probably able to manage the translations in different locales such as Dutch, German, French, Spanish and so forth. <code> >> I18n.locale => :en >> (c = Category.first).name => "birthday" >> I18n.locale = :nl => :nl >> c.name => "verjaardag" >> I18n.locale = :fr => :fr >> c.name => "anniversaire" </code> Sometimes you want to display the translation in pluralized form. For instance: <code> >> I18n.locale => :en >> "Found " + c.name.pluralize => "Found birthdays" </code> A solution to accomplish this is to translate both singular and plural form: <code> >> I18n.locale => :nl >> I18n.t("found").capitalize + " " + c.name_pluralized => "Gevonden verjaardagen" </code> There are some cons though: * you have to translate in singular AND plural form * you have to use two columns (@name@ and @name_pluralized@) That's some sort of redundancy as we want to keep things DRY: only translate in singular form and pluralize the translation. Fortunately, there is a Rails gem that does just that: "Rich-pluralization":http://github.com/archan937/rich_pluralization is a "E9s":http://github.com/archan937/e9s module which pluralizes words with inflection rules of the current locale. You can compare it with the @ActiveSupport::Inflector@, except that the inflections do not influence the Rails pluralization (which is used for methods as "@tableize@":http://api.rubyonrails.org/classes/ActiveSupport/Inflector.html#M000718 and "@classify@":http://api.rubyonrails.org/classes/ActiveSupport/Inflector.html#M000719). Looking at our previous example, this is what the implementation can look like: <code> >> I18n.locale => :nl >> I18n.t("found").capitalize + " " + c.name.pl => "Gevonden verjaardagen" </code> And of course, you can pluralize static strings: <code> >> I18n.locale => :nl >> "Fiets".pl => "Fietsen" >> "MUSEUM".pl => "MUSEA" </code> <small>Please note: the letter casing stays preserved(!)</small> All in all, using Rich-pluralization provides you to only translate in singular form and call @.pl@ for the pluralized translation. Now isn't that a DRY implementation? At the moment, Rich-pluralization is shipped with Dutch inflections. It covers 86% of the 54977 words provided by "INL (Institution of Dutch Lexicology)":http://www.inl.nl. This will increase as the developers are working hard on improving the inflections. Also, you can also add inflections for other locales. Please visit the "Github project page":http://github.com/archan937/rich_pluralization if you are interested for more information.