Roman numeral converter

Roman numerals combine I (1), V (5), X (10), L (50), C (100), D (500) and M (1000). A smaller numeral written before a larger one is subtracted: 4 = IV, 9 = IX and 2026 = MMXXVI.

Enter the details (current step)

Type of conversion

Result

Please complete the details. The result will appear here.

How it is calculated

  1. Seven letters are used: I = 1, V = 5, X = 10, L = 50, C = 100, D = 500 and M = 1000.
  2. A smaller numeral after a larger one is added, as in VI = 6. A smaller numeral before a larger one is subtracted, and only in six cases: IV, IX, XL, XC, CD and CM (4, 9, 40, 90, 400 and 900).
  3. The same letter is not repeated more than three times: 3 = III and 30 = XXX, but 4 is IV, not IIII.
  4. Thousands, hundreds, tens and units are written in turn: 1994 = M + CM + XC + IV = MCMXCIV. The largest standard numeral is 3999 (MMMCMXCIX).
  5. In a date, the day, month and year are converted separately and joined with dots: 31 October 2026 is XXXI.X.MMXXVI (DD.MM.YYYY).
  6. All calculations are done in your browser. The details you enter are not sent to any server.

Roman numerals chart (1 to 100)

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

Hundreds and thousands

100
C
200
CC
300
CCC
400
CD
500
D
600
DC
700
DCC
800
DCCC
900
CM
1000
M
2000
MM
3000
MMM

Roman numeral characters (Unicode)

ValueCapitalSmall
1Ⅰⅰ
2Ⅱⅱ
3Ⅲⅲ
4Ⅳⅳ
5Ⅴⅴ
6Ⅵⅵ
7Ⅶⅶ
8Ⅷⅷ
9Ⅸⅸ
10Ⅹⅹ
11Ⅺⅺ
12Ⅻⅻ
50Ⅼⅼ
100Ⅽⅽ
500Ⅾⅾ
1000Ⅿⅿ

These are single characters for places where letters cannot be combined. Documents normally use ordinary letters.

Worked examples

2026 in Roman numerals

Details
2026
Result
MMXXVI

1994 in Roman numerals

Details
1994
Result
MCMXCIV

The largest standard numeral, 3999

Details
3999
Result
MMMCMXCIX

XLIX as a number

Details
XLIX
Result
49

Ⅻ (Unicode character) as a number

Details
Ⅻ
Result
12

Date 31 October 2026 (DD.MM.YYYY)

Details
2026-10-31
Result
XXXI.X.MMXXVI

Date 1 January 2000 (MM.DD.YYYY)

Details
2000-1-1
Result
I.I.MM