Roman Numeral — XXIX (29) — free printable diagram

What is XXIX in Roman numerals?

XXIX is the Roman numeral for 29 — twenty-nine. Written the other way round, 29 in Roman numerals is XXIX.

Roman numeral

XXIX

Number

29

In words

twenty-nine

Symbols used

I = 1, X = 10

Written as

X (10) + X (10) + IX (9)

• XXIX is built from X (10) + X (10) + IX (9), which adds up to 29.
• IX uses the subtraction rule: a smaller symbol before a larger one is taken away, so I before X means 10 − 1 = 9.
• Roman numerals are read from left to right, adding each symbol as you go, except where the subtraction rule applies.