Roman numerals are a system for writing numbers using letters from the Latin alphabet. Like the ones you learned in school - I, V, X, L, C, D, and M. They stand for 1, 5, 10, 50, 100, 500, and, respectively, 1,000. These letters represent specific numbers; combining them differently gives you Roman numerals. For example, MMXXIV gives you the year 2024.

Roman numeral | Number |

I | 1 |

V | 5 |

X | 10 |

L | 50 |

C | 100 |

D | 500 |

M | 1000 |

Roman numerals are still useful. You might see them on buildings, clocks, and even book titles. They are often used to add elegance and sophistication to designs. Additionally, they provide a unique and fancy look to numbers.

Numbers to Roman Numerals or

Roman Numerals to Numbers

**Why are Roman numerals important?**

Roman numerals are significant because they have a long history, having been used for over 2,000 years. They have played a crucial role in the development of mathematics and science. Additionally, many people find their appearance quite appealing!

**How do Roman numerals work?**

Roman numerals work by combining those seven basic letters in different ways. It's like a secret code! When you see a smaller letter before a bigger one, it means you subtract the smaller one from the bigger one.

Roman numerals combine the seven basic letters (I, V, X, L, C, D, and M) to signify different numbers: 1, 5, 10, 50, 100, 500, and, 1,000.

The basic rules for combining these letters are:

- When a smaller letter appears before a larger one, it is subtracted from the larger one. For example, IV represents 4 (5 - 1), and IX represents 9 (10 - 1).
- Large numbers followed by small numbers you ADD For example, VI represents 6 (5+1), or XI represents 11 (10+1).
- When the numbers repeat: ADD. For example, XX represents 20 (10+10), or CC represents 200 (100+100).
- The same letter cannot be used more than three times consecutively. V, L, and D cannot be repeated; each appears once. For example you use X for 10 not VV.

**Where do Roman numerals come from?**

Roman numerals are original to ancient Rome and were used for activities such as counting and record-keeping or displaying the numbers on buildings. The ancient Romans developed the system, which was later adopted by other cultures. Today, Roman numerals are widely used and recognized around the world.

Number | Roman Numeral |
---|---|

1 | I |

2 | II |

3 | III |

4 | IV |

5 | V |

6 | VI |

7 | VII |

8 | VIII |

9 | IX |

10 | X |

11 | XI |

12 | XII |

13 | XIII |

14 | XIV |

15 | XV |

16 | XVI |

17 | XVII |

18 | XVIII |

19 | XIX |

20 | XX |

21 | XXI |

22 | XXII |

23 | XXIII |

24 | XXIV |

25 | XXV |

26 | XXVI |

27 | XXVII |

28 | XXVIII |

29 | XXIX |

30 | XXX |

31 | XXXI |

32 | XXXII |

33 | XXXIII |

34 | XXXIV |

35 | XXXV |

36 | XXXVI |

37 | XXXVII |

38 | XXXVIII |

39 | XXXIX |

40 | XL |

41 | XLI |

42 | XLII |

43 | XLIII |

44 | XLIV |

45 | XLV |

46 | XLVI |

47 | XLVII |

48 | XLVIII |

49 | XLIX |

50 | L |

51 | LI |

52 | LII |

53 | LIII |

54 | LIV |

55 | LV |

56 | LVI |

57 | LVII |

58 | LVIII |

59 | LIX |

60 | LX |

61 | LXI |

62 | LXII |

63 | LXIII |

64 | LXIV |

65 | LXV |

66 | LXVI |

67 | LXVII |

68 | LXVIII |

69 | LXIX |

70 | LXX |

71 | LXXI |

72 | LXXII |

73 | LXXIII |

74 | LXXIV |

75 | LXXV |

76 | LXXVI |

77 | LXXVII |

78 | LXXVIII |

79 | LXXIX |

80 | LXXX |

81 | LXXXI |

82 | LXXXII |

83 | LXXXIII |

84 | LXXXIV |

85 | LXXXV |

86 | LXXXVI |

87 | LXXXVII |

88 | LXXXVIII |

89 | LXXXIX |

90 | XC |

91 | XCI |

92 | XCII |

93 | XCIII |

94 | XCIV |

95 | XCV |

96 | XCVI |

97 | XCVII |

98 | XCVIII |

99 | XCIX |

100 | C |

Number | Roman Numeral |
---|---|

101 | CI |

102 | CII |

200 | CC |

300 | CCC |

400 | CD |

500 | D |

600 | DC |

700 | DCC |

800 | DCCC |

900 | CM |

1,000 | M |

1,001 | MI |

1,002 | MII |

1,900 | MCM |

1,984 | MCMLXXXIV |

2,000 | MM |

2,001 | MMI |

3,000 | MMM |

4,000 | I̅V̅ |

5,000 | V̅ |

Note: For numbers 4000 and above, the Roman numerals use a special notation:

- V̅ represents 5000 (V with a bar over it)
- I̅V̅ represents 4000 (IV with bars over them)