Roman Numeral Converter

Convert between decimal numbers and Roman numerals

Decimal to Roman

Convert decimal numbers (1-3999) to Roman numerals

Decimal Number

Roman Numeral

Roman to Decimal

Convert Roman numerals to decimal numbers

Roman Numeral

Decimal Number

Roman Numeral Reference

Basic Symbols

I = 1

V = 5

X = 10

L = 50

C = 100

D = 500

M = 1000

Examples

IV = 4

IX = 9

XL = 40

XC = 90

CD = 400

CM = 900

MCMXC = 1990