How do you write 2011 in Roman numerals?

2011 is written as MMXI in Roman numerals: 2011 = 2000 (MM) + 10 (X) + 1 (I). The symbols are then written from largest to smallest value.

What does MMXI stand for?

MMXI stands for the number 2011. Reading left to right: MM = 2000, X = 10, I = 1.

How do you write "2011th" in Roman numerals?

Ordinal numbers use the same numerals as cardinal numbers, so "2011th" is written MMXI — Roman notation has no separate ordinal form.

2011 in Roman Numerals

How to write the number 2011 in Roman numerals, with the full place-value breakdown.

The number 2011 in Roman numerals

MMXI

Place-value breakdown

2011 = 2000 + 10 + 1, so MMXI = MM + X + I. Roman numerals are written from largest to smallest value, left to right:

Place	Value	Roman	Rule
Thousands	2000	MM	Additive rule: MM = 2000 (symbols are simply added)
Tens	10	X	Additive rule: X = 10 (symbols are simply added)
Ones	1	I	Additive rule: I = 1 (symbols are simply added)

About the number 2011

The number 2011 is written MMXI in Roman numerals. MMXI is the year 2011 written in Roman numerals — used on monuments, copyright notices and clock faces.

Looking for the ordinal form — "2011th in Roman numerals"? Roman notation makes no distinction between cardinal and ordinal numbers, so "2011th" is also written MMXI.

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