Roman Numeral Converter

Easily convert Arabic numbers to Roman numerals and vice versa with our online Roman Numeral Converter. Get quick and accurate conversions.


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Note: Enter any number between 1 and 3999, because Roman numerals can't represent numbers greater than 3999.


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About Roman Numeral Converter

Roman Numeral Converter is an online tool in our converters family that facilitates the seamless conversion of Arabic numbers to Roman numerals and vice versa. Roman numerals are a numeral system that originated in ancient Rome and were used throughout the Roman Empire. The main benefits of Roman numerals include:

  • Representing numbers in a unique and historical format
  • Learning about and working with Roman numerals for educational or recreational purposes
  • Using Roman numerals for specific applications such as numbering chapters, outlining outlines, or adding a decorative touch to designs and structures


Here are the key features of the Roman Numeral Converter tool:

  • Two-Way Data Binding: Enables conversion between Arabic numbers and Roman numerals from a single input field.
  • Auto Process on Input Change: Automatically updates the output field with the converted Roman numeral upon any change in the input field.

How to Use the Converter

Using the converter is simple and intuitive. Follow these steps to convert numbers to Roman numerals or vice versa:

  1. Enter Arabic Number: Input the Arabic number into the provided field.
  2. Observe Roman Number: The corresponding Roman numeral is immediately displayed in the output field.
  3. Explore Results: Use the converter to experiment with various numbers and observe their Roman numeral equivalents.

Why Roman Numeral Converter?

Roman Numeral Converter is a valuable tool for a wide range of applications and scenarios, including:

  • Educational purposes, for learning and practicing Roman numeral conversion
  • Design and aesthetics, for adding a touch of antiquity to projects and presentations
  • Historical references and analyses, for working with historical or dated materials that use Roman numerals

Additional Resources

For more information about Roman numerals and their historical and practical significance, you can refer to the following reputable sources:


  1. What are Roman numerals and how do they work?

    Roman numerals are a numeral system originating from ancient Rome, using combinations of letters from the Latin alphabet (I, V, X, L, C, D, M) to represent numbers. Each letter has a specific value, and numbers are formed by combining these letters and adding or subtracting their values according to specific rules.

  2. What is the highest number that can be represented in Roman numerals?

    The highest number typically represented in Roman numerals is 3,999, which is written as MMMCMXCIX. While there are ways to denote larger numbers using overlines or parentheses, these are less commonly used in standard notation.

  3. How do I convert a Roman numeral to an Arabic number?

    To convert a Roman numeral to an Arabic number, start from the left and add the value of each symbol. If a smaller numeral precedes a larger numeral, subtract the smaller value. For example, the Roman numeral XIV is converted to 14 by adding 10 (X) + 4 (IV).

  4. How do I convert an Arabic number to a Roman numeral?

    To convert an Arabic number to a Roman numeral, start with the largest Roman numeral value that is less than or equal to the number, subtract this value, and repeat the process with the remainder. For example, the number 27 is converted to XXVII by adding 10 (X) + 10 (X) + 5 (V) + 1 (I) + 1 (I).

  5. Can you give me some examples of Roman numeral?

    Of course. For example, 2025 in Roman numerals is MMXXV, 2024 in Roman numerals is MMXXIV, 2023 in Roman numerals is MMXXIII, 500 in Roman numerals is D, 28 in Roman numerals is XXVIII, 2005 in Roman numerals is MMV.