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Roman Numeral Converter

Convert between numbers and Roman numerals. Perfect for historical documents, clock faces, and educational purposes.

🔄Convert to Roman Numerals
Convert numbers (1-3999) to Roman numerals
Result will appear here
📚Roman Numeral Reference

Basic Symbols

I1
V5
X10
L50
C100
D500
M1000

Subtractive Notation

IV4 (5-1)
IX9 (10-1)
XL40 (50-10)
XC90 (100-10)
CD400 (500-100)
CM900 (1000-100)

Common Examples

1
I
5
V
10
X
25
XXV
50
L
100
C
500
D
1000
M
2024
MMXXIV
3999
MMMCMXCIX
📖How to Use
1

Choose Direction

Select Number → Roman or Roman → Number

2

Enter Value

Input your number or Roman numeral

3

Convert & Copy

Get your result and copy it if needed

💡 Rules & Tips

  • • Range: Numbers must be between 1 and 3999
  • • Symbols: Only I, V, X, L, C, D, M are valid
  • • Subtraction: Smaller symbols before larger ones are subtracted
  • • Repetition: Symbols can be repeated up to 3 times (except M)
  • • Common uses: Clock faces, book chapters, monarch names, outlines
  • • History: Used by ancient Romans, still used today for formal numbering
About Roman Numeral Converter

Travel back in time with our Roman Numeral Converter. Whether you're deciphering a copyright date on a movie, reading a clock face, or just curious about this ancient number system, our tool makes it easy to convert between standard numbers (Arabic numerals) and Roman numerals.

🎯 Who is this tool for?

History StudentsDesignersClock MakersGeneral Users

✨ Key Features

  • Bidirectional Conversion (Number ↔ Roman)
  • Instant Validation
  • History Log of Recent Conversions
  • Comprehensive Reference Chart
  • Educational 'How-To' Guide
  • Copy to Clipboard

🚀 How to Use

  1. 1Choose your conversion direction (Number to Roman or Roman to Number).
  2. 2Enter value in the input box.
  3. 3Result appears instantly.
  4. 4Use the reference chart to learn the symbols.
Frequently Asked Questions