How do I convert a number to Roman numerals?

Roman numerals use letters: I=1, V=5, X=10, L=50, C=100, D=500, M=1000. Enter the number and the tool converts it instantly, such as 2024 = MMXXIV.

What are the rules for writing Roman numerals?

Symbols are added left to right and a symbol is not repeated more than three times. A smaller symbol before a larger one is subtracted, such as IV = 4, IX = 9, and XL = 40.

What is the largest number in Roman numerals?

The traditional Roman system usually reaches 3999 (MMMCMXCIX), as there is no standard symbol above that except an overline that multiplies the value by a thousand.

Where are Roman numerals used today?

They are used in monarch names and sequels (like Part II), chapter and clock numbers, copyright, and dates on buildings, though modern numerals are used for arithmetic.

🏛️ Roman Numeral Converter - Number to Roman & Roman to Number

Convert between decimal numbers and Roman numerals

Enter a number (1 - 3999)

Enter a Roman numeral

📖 Roman Numerals Reference

Roman	Value
I	1
V	5
X	10
L	50
C	100
D	500
M	1000

Rules:

Numbers are written from largest to smallest, and their values are added.
If a smaller numeral appears before a larger one, it is subtracted (e.g., IV = 4, IX = 9).
A letter cannot be repeated more than three times in a row.