🏛

Roman Numerals Converter

Convert between Arabic numbers and Roman numerals. Supports numbers 1-3999 with validation and examples.

Ad 336x280
Ad 336x280
Ad 336x280
Result
-
Copied!
Roman Numeral Values
I
1
V
5
X
10
L
50
C
100
D
500
M
1000
V̅
5000
Common Examples
1
I
5
V
10
X
50
L
100
C
500
D
1000
M
2024
MMXXIV
History of Roman Numerals

Roman numerals originated in ancient Rome around 500 BCE and remained the primary numeral system throughout the Roman Empire. The system uses combinations of letters from the Latin alphabet to represent values.

The subtractive notation (like IV for 4 instead of IIII) became popular during the Middle Ages to save space and make numbers easier to read. Today, Roman numerals are still used in various contexts including clock faces, book chapters, movie sequels, and formal names.

Legal Disclaimer / Yasal Uyarı: This converter follows standard Roman numeral rules. Valid range is 1-3999 for standard notation. / Bu dönüştürücü standart Roma rakamı kurallarını izler. Standart gösterim için geçerli aralık 1-3999'dur.

About Roman Numerals Converter

Our free Roman Numerals Converter helps you convert between Arabic numbers and Roman numerals instantly. Whether you're deciphering dates on monuments, writing formal documents, or simply learning about this ancient number system, this tool makes conversion easy.

How to Use

  1. Choose your conversion direction: "Number to Roman" or "Roman to Number".
  2. Enter the value you want to convert (numbers 1-3999 supported).
  3. Click "Convert" or press Enter to see the result.
  4. The result will display with validation feedback.
  5. Click "Copy Result" to copy the converted value.
  6. Use the Common Examples section for quick reference.

Roman Numeral Rules

Basic Symbols: I=1, V=5, X=10, L=50, C=100, D=500, M=1000
Repetition: Symbols I, X, C, M can be repeated up to 3 times.
Subtraction: I before V or X (IV=4, IX=9), X before L or C (XL=40, XC=90), C before D or M (CD=400, CM=900).
Addition: Symbols are added when a smaller value follows a larger one (VI=6, XI=11).

Frequently Asked Questions

What is the largest number supported?

This converter supports numbers from 1 to 3999 in standard Roman notation. Numbers larger than 3999 require special notation with overlines or additional symbols.

Is there a zero in Roman numerals?

No, the ancient Romans did not have a symbol for zero. The concept of zero as a number was introduced later from India via Arab mathematicians.

Why are Roman numerals still used today?

Roman numerals are used for their classic, formal appearance in contexts like clock faces, building cornerstones, book chapters, movie sequels, monarch names, and sporting events (like Super Bowl).

How do I validate a Roman numeral?

Valid Roman numerals only use the letters I, V, X, L, C, D, M. Letters should generally appear in descending value order, with specific subtractive combinations allowed (IV, IX, XL, XC, CD, CM).

Is my data stored?

No. All conversions happen locally in your browser. No data is transmitted to our servers or stored anywhere.