Roman Numeral Converter

Roman numerals still name ship hulls, movie years, and outline items in a document, even though the arithmetic is clunky. Convert between Arabic and the Roman rules you were taught, including the subtractive pairs (IV, IX, XL, …). The ancient Romans did not need zero; modern pages usually cap at 3999 or 4999—match your assignment’s cap when a teacher sets one.

[calculator id="roman-numeral-converter"] — Shortcode reference; the live calculator mounts in the block below when the child theme enqueues the matching script.