Convert numbers and dates to Roman numerals

Type a number to get its Roman numeral, type a Roman numeral to get the number, or pick a date to write it in Roman numerals. Non-standard forms such as IIII are spotted and corrected.

Number → Roman numeral

Number

From 1 to 3,999.

Roman numeral → number

Roman numeral

Date → Roman numerals

Date

Separator

.·-/

Show Roman numerals 1 to 100

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

Conversions run on this device. We don't see, store or log what you type.

How it works

Type a number from 1 to 3,999, or a Roman numeral such as MMXXVI.
For a date, pick it and choose the separator you want between day, month and year.
Read the answer, or tap Copy; open the chart for 1 to 100.

How Roman numerals work

Seven letters stand for numbers: I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1,000. Values are added from largest to smallest (MMXXVI = 1,000 + 1,000 + 10 + 10 + 5 + 1 = 2026), except six subtractive pairs, where a smaller letter before a larger one is taken away: IV = 4, IX = 9, XL = 40, XC = 90, CD = 400, CM = 900. So 1994 is MCMXCIV.

Standard and non-standard forms

No letter is used more than three times in a row, and only the six pairs above subtract. That's why 4 is IV, 99 is XCIX (not IC) and 49 is XLIX (not IL). Clocks often show IIII for 4: the converter reads such forms, gives their value, and shows the standard spelling. Without extra symbols, the largest number is 3,999 (MMMCMXCIX).

Dates in Roman numerals

Each part of the date is converted on its own and kept in the order day, month, year: 16 February 2000 becomes XVI.II.MM, and 4 July 1776 becomes IV · VII · MDCCLXXVI. For a tattoo or an engraving, check the order you want (some people prefer month first) and copy the result exactly, since one wrong letter changes the date.

Worked examples

Numbers and their Roman numerals
Number	Roman numeral
4	IV
9	IX
14	XIV
19	XIX
40	XL
49	XLIX
90	XC
99	XCIX
400	CD
500	D
900	CM
1,000	M
1,999	MCMXCIX
2,026	MMXXVI
3,999	MMMCMXCIX

Frequently asked questions

What is 2026 in Roman numerals?

MMXXVI.

Is there a Roman numeral for zero?

No. Roman numerals have no zero and no negative numbers, so the converter works from 1 to 3,999.

Is 4 written IV or IIII?

IV is the standard form. IIII appears on many clock faces by tradition, and the converter reads it as 4.

Last reviewed: October 6, 2026