ActionView::Helpers::NumberHelper

`number_to_human(1234) # => "1.23 Thousand"` Rails sure is hip to how the kids talk these days

Provides methods for converting numbers into formatted strings. Methods are provided for phone numbers, currency, percentage, precision, positional notation, file size and pretty printing. Most methods expect a number argument, and will return it unchanged if can’t be converted into a valid number.

Full article: http://api.rubyonrails.org/classes/ActionView/Helpers/Num...