Roman Numeral Converter

Convert numbers to Roman numerals and vice versa. Learn about the ancient Roman number system.

Enter Number (1-3999)

Quick Examples

Roman Numeral System

Basic Symbols

I = 1

V = 5

X = 10

L = 50

C = 100

D = 500

M = 1000

Subtractive Notation

IV = 4 (5 - 1)

IX = 9 (10 - 1)

XL = 40 (50 - 10)

XC = 90 (100 - 10)

CD = 400 (500 - 100)

CM = 900 (1000 - 100)

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