How do you write 100 in Roman numerals?

100 is written as C in Roman numerals: 100 = 100 (C). The symbols are then written from largest to smallest value.

What does C stand for?

C stands for the number 100. Reading left to right: C = 100.

How do you write "100th" in Roman numerals?

Ordinal numbers use the same numerals as cardinal numbers, so "100th" is written C — Roman notation has no separate ordinal form.

100 in Roman Numerals

How to write the number 100 in Roman numerals, with the full place-value breakdown.

The number 100 in Roman numerals

Place-value breakdown

100 = 100, so C = C. Roman numerals are written from largest to smallest value, left to right:

Place	Value	Roman	Rule
Hundreds	100	C	Additive rule: C = 100 (symbols are simply added)

About the number 100

The number 100 is written C in Roman numerals.

Looking for the ordinal form — "100th in Roman numerals"? Roman notation makes no distinction between cardinal and ordinal numbers, so "100th" is also written C.

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