Learn how to write XXVII in Hindu-Arabic numbers and convert it from roman numerals to numbers . See examples of other roman numerals and their conversions. Roman Numerals Converter - Easily convert Roman numerals to Arabic numbers and vice versa. Find the meaning of Roman numeral dates and sequences like "X XXIII XVII " instantly. Learn how to write and translate XXVII in roman numerals and numbers . XXVII equals 27 in decimal system and can be written as XX + VII or XX + X + V + I + I. Roman numerals like XXVII (27) are frequently seen on watch faces, in books, on page numbers , and even in dates for tattoos. For example, March 27 can be written as “ XXVII March” or as the date “III/ XXVII ” (if written in MM/DD format).