How do you write 19 in Roman numerals?

19 is written as XIX in Roman numerals: 19 = 10 (X) + 9 (IX). The symbols are then written from largest to smallest value.

What does XIX stand for?

XIX stands for the number 19. Reading left to right: X = 10, IX = 9.

How do you write "19th" in Roman numerals?

Ordinal numbers use the same numerals as cardinal numbers, so "19th" is written XIX — Roman notation has no separate ordinal form.

19 in Roman Numerals

How to write the number 19 in Roman numerals, with the full place-value breakdown.

The number 19 in Roman numerals

XIX

Place-value breakdown

19 = 10 + 9, so XIX = X + IX. Roman numerals are written from largest to smallest value, left to right:

Place	Value	Roman	Rule
Tens	10	X	Additive rule: X = 10 (symbols are simply added)
Ones	9	IX	Subtractive rule: IX = 10 − 1 (a smaller symbol before a larger one is subtracted)

About the number 19

The number 19 is written XIX in Roman numerals.

Looking for the ordinal form — "19th in Roman numerals"? Roman notation makes no distinction between cardinal and ordinal numbers, so "19th" is also written XIX.

Convert any number

Number (1-3999)

Roman numeral

XIX