How do you write 9 in Roman numerals?

9 is written as IX in Roman numerals: 9 = 9 (IX). The symbols are then written from largest to smallest value.

What does IX stand for?

IX stands for the number 9. Reading left to right: IX = 9.

How do you write "9th" in Roman numerals?

Ordinal numbers use the same numerals as cardinal numbers, so "9th" is written IX — Roman notation has no separate ordinal form.

9 in Roman Numerals

How to write the number 9 in Roman numerals, with the full place-value breakdown.

The number 9 in Roman numerals

Place-value breakdown

9 = 9, so IX = IX. Roman numerals are written from largest to smallest value, left to right:

Place	Value	Roman	Rule
Ones	9	IX	Subtractive rule: IX = 10 − 1 (a smaller symbol before a larger one is subtracted)

About the number 9

The number 9 is written IX in Roman numerals.

Looking for the ordinal form — "9th in Roman numerals"? Roman notation makes no distinction between cardinal and ordinal numbers, so "9th" is also written IX.

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