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Roman Numerals Converter

Convert a number to a Roman numeral or a Roman numeral back to a number — both directions, from 1 to 3999 — with a place-value breakdown and full step-by-step working.

Symbols:  I=1, V=5, X=10, L=50, C=100, D=500, M=1000
mode number

Standard Roman numerals run from 1 to 3999. Subtractive pairs are CM, CD, XC, XL, IX, IV.

Results

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Input
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Result
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Place-value breakdown
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Step-by-step (standard symbol table)