Roman Numeral Converter

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Convert numbers & dates to Roman numerals — with step-by-step breakdown

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📖 Symbol Reference

I 1

IV 4

V 5

IX 9

X 10

XL 40

L 50

XC 90

C 100

CD 400

D 500

CM 900

M 1000

M̄ 1,000,000

Romans had no symbol for zero. Large numbers beyond 3,999 used a vinculum (overline bar) to multiply by 1,000.