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12 in Roman Numerals

The number 12 written in Roman numerals is XII.

12
=
XII

How XII is built:

X= 10
II= 2
XII= 12
Reverse lookup

Looking up the other way? XII in Arabic numbers is 12. Use the full converter to enter any Roman numeral:

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Frequently asked questions
What is 12 in Roman numerals?
12 in Roman numerals is XII. It is built from X (10) + II (2) = 12.
How do you write 12 in Roman numerals?
To write 12 in Roman numerals, identify the largest Roman symbols that fit: 10 = X, 2 = II. Write them left to right: XII.
What does XII mean?
XII is the Roman numeral for 12. The symbols represent: X = 10, II = 2, which add up to 12.
What is the range of Roman numerals?
Standard Roman numerals cover 1 to 3,999 (I to MMMCMXCIX). Numbers outside this range cannot be represented with the classic seven symbols: I, V, X, L, C, D, M.
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