Convert numbers to Roman numerals and back — with a full symbol breakdown
Our free Roman Numeral Converter turns ordinary numbers into classic Roman numerals and translates Roman numerals back into everyday decimal values, all in an instant. Type a number like 2024 and watch it become MMXXIV, or paste MCMLXXXIV and see it resolve to 1984. Every result comes with a symbol-by-symbol breakdown so you understand exactly how the answer was built rather than simply trusting a black box.
Roman numerals still appear everywhere in modern life, from the copyright years on films and the chapter headings in books to Super Bowl titles, clock faces, and the regnal names of monarchs. Reading and writing them correctly can be tricky because of subtractive notation, where IV means four and IX means nine. This tool spells out each subtractive pair and each additive group so the logic is always visible.
Students learning the numeral system, teachers preparing worksheets, designers labeling editions, and anyone decoding a tattoo or monument inscription can rely on this converter for accurate, standards-compliant results. It works on any device, requires no download or account, and runs entirely in your browser, giving you a fast reference you can return to whenever a Roman numeral needs cracking.