Roman Numeral Converter

Convert between Arabic numbers and Roman numerals instantly

Arabic → Roman

Roman → Arabic

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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