Use this to easily convert regular numerals (Arabic) to Roman numerals.

The Roman numerals converter allows you to convert "regular" numerals between 0–3999 to Roman numerals or vice versa.

The Roman numerals are based on the letters I, V, X, L, C, D and M, each of which represents a particular value. They can be combined to form any number. Today, Roman numerals are usually only used to indicate ordinal numbers.

Character | Value | Name |
---|---|---|

I | 1 | unus |

V | 5 | quinque |

X | 10 | decem |

L | 50 | quinquaginta |

C | 100 | centum |

D | 500 | quingenti |

M | 1000 | mille |

The same characters are combined to form numbers between individual characters. For example, the number two in Roman numerals is **II** and three is **III**. The general rule is that no more than three of the same character can be combined, so four is **IV**, or *one subtracted from five*. Five is **V** and six is **VI**, *one added to five*. The basic rule is that a smaller character to the left of a greater character is subtracted from the greater one, while one on the right is added to it. However, the Romans themselves did not always follow this principle and exceptional forms, such as **IIII** (4) or even **IIX** (8) are common. The form **IIII** is common on clocks even today. The following list of the first ten numbers helps you to grasp the idea.:

**I**: one**II**: two**III**: three**IV**: four**V**: five**VI**: six**VII**: seven**VIII**: eight**IX**: nine**X**: ten