Roman Numeral Converter

Convert numbers to Roman numerals (and back) instantly — up to 3,999.

Number → Roman (1–3999)

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Roman → Number

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Reference:

I = 1

V = 5

X = 10

L = 50

C = 100

D = 500

M = 1000

Standard Roman numerals only go up to 3,999 (MMMCMXCIX). Larger numbers use overlines, which are rare in everyday use.

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