Roman
Numeral
Converter

Convert between decimal numbers and Roman numerals. Supports values from 1 to 3,999 with step-by-step conversion breakdowns.

Enter a number (1–3,999)

Enter a Roman numeral

MCMXCIV is 1994 — but how does the subtraction rule actually work, and why does it stop at 3,999?

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RomanNumeralConverter