Roman Numeral to Number Converter
Convert Roman numerals to decimal numbers.
Formula
Sum values, subtracting when smaller precedes larger
How to Read Roman Numerals
Read left to right. If a smaller value precedes a larger, subtract it (IV = 4). Otherwise add (VI = 6).
Example: MCMXCIV → 1000+900+90+4 = 1994
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Last updated: 2026-08-08