C in numbers
C = 100
Working: C = 100
The Roman numeral C represents the number 100.
Reading it left to right, the symbols contribute like this: C = 100. Roman numerals are read by adding values together, except where a smaller symbol sits immediately before a larger one — that pairing means subtraction, which is why IV is 4 rather than 6.
Structurally, C is 1 symbol long. It is entirely additive: every symbol adds to the running total, with no smaller symbol standing before a larger one. No symbol repeats.
C is a hundred, from the Latin centum — one of only two base symbols that is a genuine abbreviation of its Latin name, the other being M for mille. The origins of I, V, X, L and D are far less certain.
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Frequently asked questions
What number is C in Roman numerals?
C is 100. The symbols break down as C = 100.
Why is IV four and not six?
When a smaller symbol comes immediately before a larger one it is subtracted instead of added. I before V means five minus one, giving four. VI, with the I after the V, means five plus one, giving six.
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For any other value, use the full Roman Numeral Converter on BrainVert.