Roman Numerals Converter
Convert Arabic numerals to Roman numerals and vice versa seamlessly with our efficient online tool. Easily convert numbers between the two numeral systems, allowing for easy understanding and communication. Simplify complex calculations, historical references, and numeral conversions with just a few clicks.
What is Roman Numerals Converter
A Roman Numerals Converter is a tool that allows you to convert numbers between the decimal system and the Roman numeral system. It can convert decimal numbers (such as 1, 12, 100, etc.) into their corresponding Roman numeral representation (I, XII, C, etc.), and vice versa.
If you have a decimal number and want to convert it to a Roman numeral, the converter will perform the necessary calculations and provide the Roman numeral representation. Similarly, if you have a Roman numeral and want to convert it to a decimal number, the converter will determine the equivalent value in the decimal system.
Roman numerals use a combination of letters from the Latin alphabet to represent numbers. The basic numerals in the Roman system are:
- I: 1
- V: 5
- X: 10
- L: 50
- C: 100
- D: 500
- M: 1000
To convert between systems accurately, the converter applies rules such as additive and subtractive notations, including symbols like IV for 4, IX for 9, XL for 40, etc.
To utilize a Roman Numerals Converter, you can find various online tools or even mobile applications that allow you to input a number or a Roman numeral and instantly obtain the converted result.
Roman numerals conversion table
Number | Roman numeral | Calculation |
---|---|---|
0 | not defined | |
1 | I | 1 |
2 | II | 1+1 |
3 | III | 1+1+1 |
4 | IV | 5-1 |
5 | V | 5 |
6 | VI | 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 | -10+50 |
41 | XLI | -10+50+1 |
42 | XLII | -10+50+1+1 |
43 | XLIII | -10+50+1+1+1 |
44 | XLIV | -10+50-1+5 |
45 | XLV | -10+50+5 |
46 | XLVI | -10+50+5+1 |
47 | XLVII | -10+50+5+1+1 |
48 | XLVIII | -10+50+5+1+1+1 |
49 | XLIX | -10+50-1+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+10 |
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 | C | 100 |
200 | CC | 100+100 |
300 | CCC | 100+100+100 |
400 | CD | 500-100 |
500 | D | 500 |
600 | DC | 500+100 |
700 | DCC | 500+100+100 |
800 | DCCC | 500+100+100+100 |
900 | CM | 1000-100 |
1000 | M | 1000 |
5000 | V | |
10000 | X | |
50000 | L | |
100000 | C | |
500000 | D | |
1000000 | M |