Roman Numeral — XII (12) — free printable diagram

What is XII in Roman numerals?

XII is the Roman numeral for 12 — twelve. Written the other way round, 12 in Roman numerals is XII.

Roman numeral

XII

Number

12

In words

twelve

Symbols used

I = 1, X = 10

Written as

X (10) + I (1) + I (1)

• XII is built from X (10) + I (1) + I (1), which adds up to 12.
• Roman numerals are read from left to right, adding each symbol as you go, except where the subtraction rule applies.