Math

Roman Numeral Converter

Convert between Roman numerals (I, V, X, L, C, D, M) and Arabic numbers.

Arabic → Roman

Roman → Arabic

Reference Table

${[['I','1'],['IV','4'],['V','5'],['IX','9'],['X','10'],['XL','40'],['L','50'],['XC','90'],['C','100'],['CD','400'],['D','500'],['CM','900'],['M','1000']].map(([r,a])=>`

${r}${a}

`).join('')}