10 in Roman numerals

10 = X

Working: X = 10

The number 10 is written as X in Roman numerals.

Roman numerals are built by adding symbol values together from largest to smallest: X = 10. 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, X 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.

X is the system's second anchor after V, and the point where the pattern of the first ten numerals repeats at a higher scale. Everything from XI to XIX is simply X with the one-to-nine sequence appended, which makes the teens the easiest stretch of the system to read.

Nearby numbers

Number	Roman numeral
5	V
6	VI
7	VII
8	VIII
9	IX
11	XI
12	XII
14	XIV

Try another value

Decimal number (1–3999)

Roman numeral

MMXXIV

Reference

X10

L50

C100

D500

M1000

Frequently asked questions

How do you write 10 in Roman numerals?

10 is written X. It breaks down as X = 10.

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.