Roman Numerals Converter

Convert between Roman numerals and Arabic numbers instantly. Perfect for historical dates and formal documents. Quick and accurate.

Conversion Type Select the type of conversion you want to perform
Convert Roman numerals (e.g., XVI) to decimal numbers
Convert decimal numbers to Roman numerals
Enter a valid Roman numeral using the letters I, V, X, L, C, D, M
Display Options Choose how you want the result to be displayed
Display the step-by-step process of the conversion
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Enter a positive integer between 1 and 3999
Display Options Choose how you want the result to be displayed
Display the step-by-step process of the conversion
Widget
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Understanding Roman Numerals

Roman numerals, developed in ancient Rome, remain relevant in modern times for certain applications. This number system uses seven basic symbols: I (1), V (5), X (10), L (50), C (100), D (500), and M (1000). Understanding the rules of combining these symbols is key to reading and writing Roman numerals correctly.

Conversion Rules

Basic principles include:

  • Additive principle (VI = 6)
  • Subtractive principle (IV = 4)
  • Maximum three identical symbols
  • Larger values precede smaller ones

Modern Applications

Roman numerals appear in:

  • Clock faces
  • Book chapters
  • Movie copyright dates
  • Formal documents

Using Our Converter

Our Roman Numerals Converter provides instant conversion in both directions. Whether converting to or from Roman numerals, this tool ensures accuracy and ease of use.