Roman Numeral Converter

Convert between Arabic numbers and Roman numerals instantly

Arabic → Roman

Number (1–3999)

Roman → Arabic

Roman numeral

Roman Numeral Reference

I

1

V

5

X

10

L

50

C

100

D

500

M

1000

How to use:

• Enter an Arabic number (1–3999) and click Convert for Roman numerals
• Enter Roman numerals in the right panel for the reverse conversion
• Valid characters are I, V, X, L, C, D, M (case insensitive)
• Click Copy to copy the result to your clipboard

❓Roman Numeral FAQ

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