Roman Numeral Converter

Type a number to see it in Roman numerals — 2026 is MMXXVI, 1994 is MCMXCIV — or type a numeral to get its value. The converter uses the standard subtractive notation found on clock faces, book chapters, film credits and building cornerstones: IV for 4, IX for 9, XL for 40, XC for 90, CD for 400 and CM for 900.

Standard Roman numerals run from 1 (I) to 3,999 (MMMCMXCIX); there is no zero and no negative numbers. Numerals that break the rules — IIII, VX, IC, MCMC — are flagged rather than guessed at, because each value has exactly one standard spelling. Upper and lower case are both accepted.