Roman Numeral Converter

Type a number to get the Roman numeral, or type a Roman numeral to get the number. It works both ways in one box, from 1 (I) to 3,999 (MMMCMXCIX). It runs in your browser and nothing is uploaded.

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Roman numeral

MMXXVI

2,026 = MMXXVI

The seven Roman numeral symbols

I: 1
V: 5
X: 10
L: 50
C: 100
D: 500
M: 1,000

Calculated instantly in your browser with standard formulas. Double-check anything important. Full disclaimer and terms of use.

The Roman numeral symbols

Symbol	Value	Can repeat?
I	1	Up to 3 times (III = 3)
V	5	No
X	10	Up to 3 times (XXX = 30)
L	50	No
C	100	Up to 3 times (CCC = 300)
D	500	No
M	1,000	Up to 3 times (MMM = 3,000)

How to write a number in Roman numerals

Split the number into thousands, hundreds, tens and units, write each part, and put them together from largest to smallest. For 1994: 1,000 is M, 900 is CM, 90 is XC and 4 is IV, so 1994 is MCMXCIV.

Add symbols from largest to smallest: VIII = 5 + 3 = 8.
A smaller symbol before a larger one is subtracted. The only pairs used are IV (4), IX (9), XL (40), XC (90), CD (400) and CM (900).
Never repeat a symbol more than three times in a row, so 4 is IV and not IIII.

Roman numerals 1 to 20 and round numbers

Number	Roman	Number	Roman
1	I	11	XI
2	II	12	XII
3	III	13	XIII
4	IV	14	XIV
5	V	15	XV
6	VI	16	XVI
7	VII	17	XVII
8	VIII	18	XVIII
9	IX	19	XIX
10	X	20	XX
50	L	500	D
100	C	1,000	M

Years in Roman numerals

Year	Roman numeral
1900	MCM
1984	MCMLXXXIV
2000	MM
2024	MMXXIV
2025	MMXXV
2026	MMXXVI
2030	MMXXX

Where Roman numerals are still used

Clock faces, book chapters and the front pages of books.
Names of kings, queens and popes (Elizabeth II, Pope John Paul II).
Events and sequels, such as the Super Bowl and film titles.
Copyright years on films and buildings, and outlines with I, II and III headings.

How to use the Roman Numeral Converter tool

Type a number such as 2026, or a Roman numeral such as MMXXVI.
Read the answer underneath. The box works out which way to convert.
Press a number under Try for a quick example, and copy the answer if you need it.

Frequently asked questions

How do I write 2026 in Roman numerals?

2026 is MMXXVI: MM is 2,000, XX is 20 and VI is 6. Write the thousands, hundreds, tens and units from left to right.

How do I read a Roman numeral?

Add the values of the symbols from left to right, but when a smaller symbol comes before a bigger one, subtract it instead. So XIV is 10 + (5 − 1) = 14 and MCMXCIV is 1,000 + (1,000 − 100) + (100 − 10) + (5 − 1) = 1,994.

What are the seven Roman numeral symbols?

I = 1, V = 5, X = 10, L = 50, C = 100, D = 500 and M = 1,000. Only I, X, C and M can be repeated, up to three times in a row.

Why does the converter stop at 3,999?

Standard Roman numerals have no symbol above M (1,000) and never repeat a symbol more than three times, so the largest number is MMMCMXCIX (3,999). Larger numbers were written with a bar over the symbols, which is not part of the standard set.

Is there a Roman numeral for zero?

No. The Romans had no symbol for zero. The converter starts at 1 (I). Some medieval texts used the word nulla for nothing, but it was not a numeral.