🔢 Numbers & Math
Roman Numeral Converter
"Convert any number to Roman numerals — or decode any Roman numeral — instantly."
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Roman numeral
Breakdown
Roman numeral reference
${[['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,n])=>`
${r}${n}
`).join('')}
Convert integers from 1 to 3,999,999 to Roman numerals and vice versa. Supports both standard and extended Roman numeral notation. Great for history buffs, students, film copyright years, and anyone puzzled by a movie's production date.
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