How do you write 17 in Roman numerals?

17 is written as XVII in Roman numerals: 17 = 10 (X) + 7 (VII). The symbols are then written from largest to smallest value.

What does XVII stand for?

XVII stands for the number 17. Reading left to right: X = 10, VII = 7.

How do you write "17th" in Roman numerals?

Ordinal numbers use the same numerals as cardinal numbers, so "17th" is written XVII — Roman notation has no separate ordinal form.

17 in Roman Numerals

How to write the number 17 in Roman numerals, with the full place-value breakdown.

The number 17 in Roman numerals

XVII

Place-value breakdown

17 = 10 + 7, so XVII = X + VII. 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	7	VII	Additive rule: VII = 7 (symbols are simply added)

About the number 17

The number 17 is written XVII in Roman numerals.

Looking for the ordinal form — "17th in Roman numerals"? Roman notation makes no distinction between cardinal and ordinal numbers, so "17th" is also written XVII.

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