Roman Numeral — XXIV (24) — free printable diagram

What is XXIV in Roman numerals?

XXIV is the Roman numeral for 24 — twenty-four. Written the other way round, 24 in Roman numerals is XXIV.

Roman numeral

XXIV

Number

24

In words

twenty-four

Symbols used

I = 1, V = 5, X = 10

Written as

X (10) + X (10) + IV (4)

• XXIV is built from X (10) + X (10) + IV (4), which adds up to 24.
• IV uses the subtraction rule: a smaller symbol before a larger one is taken away, so I before V means 5 − 1 = 4.
• Roman numerals are read from left to right, adding each symbol as you go, except where the subtraction rule applies.