You don't have javascript enabled. Please enable javascript to use this website.
Roman Numeral Converter

Roman Numeral Converter

Effortlessly translate Roman Numerals to Numbers / Numbers to Roman Numerals

Explore More Useful Tools:


What is a Roman Numeral Converter?

A Roman Numeral Converter is a digital tool that converts numbers between Roman numerals and Arabic numerals.


How does a Roman Numeral Converter Work?

Roman to Arabic:

  1. Symbol Identification: The tool identifies the Roman numerals in the input.
  2. Symbol Value Assignment: Each Roman numeral is assigned its corresponding decimal value (e.g., I=1, V=5, X=10, L=50, C=100, D=500, M=1000).
  3. Value Calculation: The tool calculates the decimal value by summing up the values of the Roman numerals, considering the subtractive notation (e.g., IV=4, IX=9, XL=40, XC=90, CD=400, CM=900).
  4. Decimal Output: The calculated decimal value is displayed as the output.

Arabic to Roman:

  1. Decimal Input: You input the decimal number to be converted.
  2. Largest Roman Numeral: The tool identifies the largest Roman numeral that is less than or equal to the decimal number.
  3. Subtraction and Recursion: The largest Roman numeral is subtracted from the decimal number, and the process is repeated for the remaining value until the decimal number reaches zero.
  4. Roman Numeral Output: The concatenated Roman numerals form the final output.

Why Use a Roman Numeral Converter?

  • Historical Context: Understanding historical documents and texts.
  • Educational Purposes: Learning about Roman numerals and their system.
  • Design and Art: Using Roman numerals in design elements or typography.
  • Programming and Data Analysis: Converting numbers between different numeral systems.

By using a Roman Numeral Converter, you can easily convert between Roman numerals and Arabic numerals, making it easier to understand and work with historical texts, mathematical calculations, and other applications.