Convert between Roman numerals and Arabic numbers instantly. Supports numbers from 1 to 3,999. Useful for clock faces, book chapters, movie sequels, copyright years, and historical dates.
Roman numerals are a numeral system from ancient Rome using letters: I (1), V (5), X (10), L (50), C (100), D (500), M (1000).
Roman numerals use subtractive notation. A smaller numeral before a larger one means subtraction. IV = 5 - 1 = 4.
No. The Roman system has no zero or negatives. Zero was introduced by Indian mathematicians and spread through Arabic mathematics. Roman numerals are now used decoratively on clock faces, book chapters, movie sequels, and Super Bowl editions.
Modern uses of Roman numerals: clock faces (classic design); movie copyright years; ordinal numbers for sports events like the Super Bowl (Super Bowl LVIII); monarch and pope ordinals (Queen Elizabeth II); book preface page numbers (i, ii, iii); building inscriptions and monuments; outline and legal document section numbering (I, II, III).