**Roman numerals** refer to the number system of the ancient Roman Empire. Latin letters were used to represent natural numbers, each of which was assigned a value. The higher number is always at the beginning.

## Calculator

All information is without guarantee

**Use calculator:**

- Select what you want to calculate.
- Enter the Roman numeral series or the decimal number into the calculator.
- Click on

## Table - Roman numerals in decimal numbers

Roman numerals | Decimal numbers |
---|---|

I | 1 |

V | 5 |

X | 10 |

L | 50 |

C | 100 |

D | 500 |

M | 1.000 |

ↁ | 5.000 |

ↂ | 10.000 |

## date

Roman numerals | date |
---|---|

MDCCLXXVI | 1776 |

MDCCCXLVIII | 1848 |

MCMXLV | 1945 |

MCMLXXXIV | 1984 |

MMXV | 2015 |

MMXIX | 2019 |

To **convert** the **date**, simply enter the digits in Roman format or as a decimal number in the calculator.

## Table of digits

A table of the most common digits can be found here:

Roman numerals | Digits |
---|---|

I | 1 |

III | 3 |

V | 5 |

IX | 9 |

X | 10 |

L | 50 |

C | 100 |

D | 500 |

M | 1.000 |

## Notation

The so-called subtraction rule is used for Roman numerals. This rule states that the values I (1), X (10) and C (50) can be placed in front of the next higher number sign and subtracted from it. This results in the following notations for numbers:

- IV = 4
- IX = 9
- XL = 40
- LC = 450

## Roman numeral system

Roman numerals are a number system that was developed in ancient Rome and is still used in certain contexts today. It is an additive and subtractive number system based on combinations of letters from the Latin alphabet.

Numbers are represented by combining these symbols in descending order. There are some special rules on how these symbols can be combined.

- Repetition: Symbols can be placed several times in a row to add their values, such as III for 3.
- Subtraction: A smaller value before a larger value stands for subtraction, such as IV for 4 (5 - 1).
- Addition: A smaller value after a larger value stands for addition, such as VI for 6 (5 1).

Roman numerals do not have a zero, and the system is not position-based, so there are no digits representing tens, hundreds or thousands. Also, there is no standardized representation for numbers over 3999, although certain symbols may be superimposed or framed to represent larger numbers.

Roman numerals are still in use today, particularly in the numbering of chapters in books, on clock faces and in the naming of monarchs and popes. Despite their limitations and the development of more efficient, position-based numbering systems, the use of Roman numerals remains a fascinating symbol of the continuity and heritage of Western culture.