Roman Numerals

Roman Numerals – Symbols, Rules and Charts

Roman numerals use seven letters to write numbers: I, V, X, L, C, D and M.

Roman numeral symbols

Symbol Value
I 1
V 5
X 10
L 50
C 100
D 500
M 1000

Rules

  • A symbol placed after a larger or equal one is added: VI = 6, XX = 20
  • A smaller symbol before a larger one is subtracted: IV = 4, IX = 9, XL = 40, XC = 90
  • A symbol is not repeated more than three times in a row: 30 = XXX, 40 = XL
  • V, L and D are never repeated

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FAQs on Roman Numerals

How is 4 written in Roman numerals?

4 is written as IV (5 − 1).

What is XXVI?

XXVI = 10 + 10 + 5 + 1 = 26.