Roman Numeral Converter
Convert any number (1–3999) to Roman numerals or decode Roman numerals back to decimal. Instant and works offline.
How Roman Numerals Work
Seven symbols (I, V, X, L, C, D, M) combine with additive and subtractive rules. Smaller before larger = subtract (IV=4). After = add (VI=6). This converter handles both directions for 1–3999.