Roman numerals
Roman numerals are a numeral system that originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages. Numbers in this system are represented by combinations of letters from the Latin alphabet.
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+5+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+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 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
Calculator Use
Convert Roman numerals to numbers and convert numbers to Roman numerals.
Use this Roman numeral converter to convert numbers from 1 to 3,999,999 into Roman numerals. Or input a Roman numeral to get its regular Arabic number value.
Roman numerals are a number system developed in ancient Rome where letters represent numbers. The modern use of Roman numerals involves the letters I, V, X, L, C, D, and M.
To convert Roman numerals greater than 3,999 use the table below for converter inputs. Use a leading underline character to input Roman numerals with an overline. A line over a Roman numeral means it is multiplied by 1,000.
For example,
C = 100,000. Enter C into the converter as _C.
CM = 900,000. Enter CM into the converter as _C_M.
The largest number you can write in Roman numerals is 3,999 which is MMMCMXCIX. You can represent numbers larger than 3,999 in Roman numerals using an overline. An overline on a Roman numeral means you are multiplying that Roman numeral by 1,000. For the number 50,000 in Roman numerals, you would use the Roman numeral L (50) with an overline to make it 50,000.
This simple Roman Numerals Converter can be used at any time to convert numbers to Roman numerals. If you need to make the conversion from Arabic numbers to Roman numerals, simply enter the number to the box on the right, and press the button 'Convert to Roman'. You will get the exact representation of the number in Roman Numeral Symbols.
- 14 = XIV
- 79 = LXXIX
- 225 = CCXXV
- 845 = DCCCXLV
- 2022 = MMXXII
