Roman Numeral Converter

Convert any number 1–3,999 to Roman numerals instantly — or decode any Roman numeral back to a number.

The 7 Roman Numeral Symbols

Symbol Value Mnemonic
I1One unit
V5Five — an open hand
X10Ten — two V's crossed
L50Fifty
C100Centum (Latin for hundred)
D500Five hundred
M1,000Mille (Latin for thousand)

Frequently Asked Questions

What is 4 in Roman numerals?

4 in Roman numerals is IV. This uses subtractive notation — placing I (1) before V (5) means you subtract 1 from 5, giving you 4. You never write IIII for 4 in standard notation.

How do you write 2024 in Roman numerals?

2024 in Roman numerals is MMXXIV. Breaking it down: MM = 2,000 (two thousands), XX = 20 (two tens), IV = 4. Added together: 2000 + 20 + 4 = 2024.

What is the largest Roman numeral?

The largest standard Roman numeral is 3,999, written as MMMCMXCIX. You can only write three M's in a row (3,000), and from there: CM = 900, XC = 90, IX = 9.

What does XIV mean in Roman numerals?

XIV equals 14. X = 10, IV = 4 (subtractive: I before V). So X + IV = 10 + 4 = 14. You'll see XIV used in movie titles, Super Bowls, and historic dates.

How do you write 0 in Roman numerals?

Zero does not exist in the Roman numeral system. Romans used the Latin word nulla (meaning "nothing") to represent zero conceptually. The numeral system starts at 1 (I) and goes up to 3,999 (MMMCMXCIX).

What is IV in Roman numerals?

IV in Roman numerals is 4. When a smaller numeral appears before a larger one, you subtract it. I (1) before V (5) = 5 − 1 = 4. This rule only applies to specific pairs: IV, IX, XL, XC, CD, and CM.