Roman Numbers (with tables and converter)

You Roman numbers (or Roman numerals) are numerical indications used to indicate centuries, chapters and pages of books, clock hours, names of popes and kings, among others.

Roman numerals are represented by capital letters, in a total of 7 numbers: I (1), V (5), X (10), L (50), C (100), D (500), M (1000).

O I corresponds to number 1, V at 5, X at 10, L at 50, Ç to 100, D to 500 and the M to the thousand.

Roman Number Converter

Convert a roman number to decimal or decimal to roman by filling in the following box.

Converter in Roman numbers

Roman:

Decimal:

Roman Numbers Table

Check Roman numerals from 1 to 100 and every hundred up to 2000.

Number Roman Number Calculation
0 does not exist
1 I 1
2 II 1+1
3 III 1+1+1
4 IV 5-1
5 V 5
6 SAW 5+1
7 VII 5+1+1
8 VIII 5+1+1+1
9 IX 10-1
10 X 10
11 XI 10+1
12 XII 10+1+1
13 XIII 10+1+1+1
14 XIV 10-1+5
15 XV 10+5
16 XVI 10+5+1
17 XVII 10+5+1+1
18 XVIII 10+5+1+1+1
19 XIX 10-1+10
20 XX 10+10
21 XXI 10+10+1
22 XXII 10+10+1+1
23 XXIII 10+10+1+1+1
24 XXIV 10+10-1+5
25 XXV 10+10+5
26 XXVI 10+10+5+1
27 XXVII 10+10+5+1+1
28 XXVIII 10+10+5+1+1+1
29 XXIX 10+10-1+10
30 XXX 10+10+10
31 XXXI 10+10+10+1
32 XXXII 10+10+10+1+1
33 XXXIII 10+10+10+1+1+1
34 XXXIV 10+10+10-1+5
35 XXXV 10+10+10+5
36 XXXVI 10+10+10+5+1
37 XXXVII 10+10+10+5+1+1
38 XXXVIII 10+10+10+5+1+1+1
39 XXXIX 10+10+10-1+10
40 XL 50-10
41 XLI 50-10+1
42 XLII 50-10+1+1
43 XLIII 50-10+1+1+1
44 XLIV 50-10-1+5
45 XLV 50-10+5
46 XLVI 50-10+5+1
47 XLVII 50-10+5+5+1
48 XLVIII 50-10+5+1+1+1
49 XIX 50-10-1+10
50 L 50
51 LI 50+1
52 LII 50+1+1
53 LIII 50+1+1+1
54 LIV 50-1+5
55 LV 50+5
56 LVI 50+5+1
57 LVII 50+5+1+1
58 LVIII 50+5+1+1+1
59 LIX 50-1+10
60 LX 50+10
61 LXI 50+10+1
62 LXII 50+10+1+1
63 LXIII 50+10+1+1+1
64 LXIV 50+10-1+5
65 LXV 50+10+5
66 LXVI 50+10+5+1
67 LXVII 50+10+5+1+1
68 LXVIII 50+10+5+1+1+1
69 LXIX 50+10-1+10
70 LXX 50+10+10
71 LXXI 50+10+10+1
72 LXXII 50+10+10+1+1
73 LXXIII 50+10+10+1+1+1
74 LXXIV 50+10+10-1+5
75 LXXV 50+10+10+5
76 LXXVI 50+10+10+5+1
77 LXXVII 50+10+10+5+1+1
78 LXXVIII 50+10+10+5+1+1+1
79 LXXIX 50+10+10-1+5
80 LXXX 50+10+10+10
81 LXXXI 50+10+10+10+1
82 LXXXII 50+10+10+10+1+1
83 LXXXIII 50+10+10+10+1+1+1
84 LXXXIV 50+10+10+10-1+5
85 LXXXV 50+10+10+10+5
86 LXXXVI 50+10+10+10+5+1
87 LXXXVII 50+10+10+10+5+1+1
88 LXXXVIII 50+10+10+10+5+1+1+1
89 LXXXIX 50+10+10+10-1+10
90 XC 100-10
91 XCI 100-10+1
92 XCII 100-10+1+1
93 XCIII 100-10+1+1+1
94 XCIV 100-10-1+5
95 XCV 100-10+5
96 XCVI 100-10+5+1
97 XCVII 100-10+5+1+1
98 XCVIII 100-10+5+1+1+1
99 XCIX 100-10-1+10
100 Ç 100
200 CC 100+100
300 CCC 100+100+100
400 CD 500-100
500 D 500
600 A.D 500+100
700 DCC 500+100+100
800 DCCC 500+100+100+100
900 CM 1000-100
1000 M 1000
2000 MM 1000+1000

Years in Roman Numerals

Year Roman Number
1000 M
1100 MC
1200 MCC
1300 MCCC
1400 MCD
1500 MD
1600 MDC
1700 MDCC
1800 MDCCC
1900 MCM
1990 MCMXC
1991 MCMXCI
1992 MCMXCII
1993 MCMXCIII
1994 MCMXIV
1995 MCMXV
1996 MCMXCVI
1997 MCMXCVII
1998 MCMXCVIII
1999 MCMXXIX
2000 MM
2001 MMI
2002 MMII
2003 MMIII
2004 MMIV
2005 MMV
2006 MMVI
2007 MMVII
2008 MMVIII
2009 MMIX
2010 MMX
2011 MMXI
2012 MMXII
2013 MMXIII
2014 MMXIV
2015 MMXV
2016 MMXVI
2017 MMXVII
2018 MMXVIII
2019 MMXIX
2020 MMXX

Centuries in Roman Numbers

Century Years Interval
XI 1001 to 1100
XII 1101 to 1200
XIII 1201 to 1300
XIV 1301 to 1400
XV 1401 to 1500
XVI 1501 to 1600
XVII 1601 to 1700
XVIII 1701 to 1800
XIX 1801 to 1900
XX 1901 to 2000
XXI 2001 to 2100
XXII 2101 to 2200

Rules for using Roman Numbers

  • The letter I is used only before the V and the X, for example: IV = 4; IX = 9.
  • The letter X is used only before L and C, for example: XL = 40; XC = 90
  • The letter C is used only before the D and the M, for example, CD = 400; CM = 900
  • The letters I, X, C and M are only grouped followed three times, for example: III = 3; XXX = 30.
  • To represent numbers greater than 4000 use a dash above the letters, which means multiplying the number by one thousand, for example, Roman numbers.
  • Equal letters add up the values, for example: II = 2; XX = 20.
  • Two different letters with the smallest before the largest subtract their values, for example: IV = 4; IX = 9.
  • Two different letters with the largest before the smallest, add up their values, for example: VI = 6; XI = 11.
  • If between any two letters there is another smaller one, its value will belong to the letter following it, for example: XIX = 19; LIV = 54.

Curiosity

Invented in ancient Roman times, Roman numerals were created to make counting easier. So the Romans developed a numbering system, with the letters of the alphabet.

The Romans did not know the representation of zero and, for this reason, this numbering system does not have any letter to represent it.

More about Roman numerals:

  • 2017 in roman numbers
  • Roman number MCMXCV
  • Roman number I = 1
  • Roman number V = 5
  • Roman number X = 10
  • Roman number L = 50
  • Roman number C = 100
  • Roman number D = 500
  • Roman number M = 1000
Monarchy: what it is, types, characteristics, in Brazil

Monarchy: what it is, types, characteristics, in Brazil

monarchy is formingovernment, the oldest that is in effect in the world today. In this form, the ...

read more

Sharing Africa. Aspects of Sharing Africa

With the political transformations of the first half of the 19th century, which culminated in the...

read more

Resistance Movements to Neocolonialism in Africa

From the second half of the 19th century onwards, a process of neocolonialism which resulted in t...

read more