Roman Numeral Converter

Convert any number from 1 to 3,999 into Roman numerals, or read a Roman numeral as a number. Type either one — the converter detects which it is.

How to use the Roman Numeral Converter

Type a number (e.g. 2026) or a Roman numeral (e.g. MMXXVI).
Read the conversion and the breakdown by thousands, hundreds, tens and ones.

How it works

Roman numerals use seven letters: I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1000. Symbols are written from largest to smallest and added together. A smaller symbol placed before a larger one is subtracted, but only in six combinations: IV (4), IX (9), XL (40), XC (90), CD (400) and CM (900).

To convert a number, handle each place value separately: 1994 = 1000 + 900 + 90 + 4 = M + CM + XC + IV = MCMXCIV. A symbol is never repeated more than three times in a row.

Roman numerals chart

Number	Roman	Number	Roman
1	I	20	XX
2	II	30	XXX
3	III	40	XL
4	IV	50	L
5	V	90	XC
6	VI	100	C
7	VII	400	CD
8	VIII	500	D
9	IX	900	CM
10	X	1000	M

Frequently asked questions

What is 2026 in Roman numerals?

MMXXVI (2000 = MM, 20 = XX, 6 = VI).

How do you write 4 in Roman numerals?

IV — one before five. Clock faces sometimes use IIII.

What is the largest Roman numeral?

With standard symbols, 3,999 (MMMCMXCIX). Larger numbers used a bar over a letter to multiply it by 1,000.

Is there a Roman numeral for zero?

No. The Romans had no symbol for zero; the word “nulla” was sometimes used.