11 in Roman numerals

11 = XI

Working: X = 10, I = 1

The number 11 is written as XI in Roman numerals.

Roman numerals are built by adding symbol values together from largest to smallest: X = 10, I = 1. Where a smaller symbol appears before a larger one — as in IV for 4 or IX for 9 — it is subtracted rather than added, which keeps the notation short.

Structurally, XI is 2 symbols long. It is entirely additive: every symbol adds to the running total, with no smaller symbol standing before a larger one. No symbol repeats.

XI is ten plus one, the start of the teens and the point where the first-ten pattern begins repeating on top of X. It appears on clock faces and in regnal and papal numbering, where the numerals are still the standard form.

Nearby numbers

Number	Roman numeral
6	VI
7	VII
8	VIII
9	IX
10	X
12	XII
14	XIV
15	XV

Try another value

Decimal number (1–3999)

Roman numeral

MMXXIV

Reference

X10

L50

C100

D500

M1000

Frequently asked questions

How do you write 11 in Roman numerals?

11 is written XI. It breaks down as X = 10, I = 1.

What are the seven Roman numeral symbols?

I is 1, V is 5, X is 10, L is 50, C is 100, D is 500, and M is 1,000. All Roman numerals are combinations of these seven symbols, and there is no symbol for zero.

For any other value, use the full Roman Numeral Converter on BrainVert.