1001 in Roman Numerals

The number 1001 written in Roman numerals is MI.

1001
=
MI

How MI is built:

M= 1000
I= 1
MI= 1001
Reverse lookup

Looking up the other way? MI in Arabic numbers is 1001. Use the full converter to enter any Roman numeral:

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Frequently asked questions
What is 1001 in Roman numerals?
1001 in Roman numerals is MI. It is built from M (1000) + I (1) = 1001.
How do you write 1001 in Roman numerals?
To write 1001 in Roman numerals, identify the largest Roman symbols that fit: 1000 = M, 1 = I. Write them left to right: MI.
What does MI mean?
MI is the Roman numeral for 1001. The symbols represent: M = 1000, I = 1, which add up to 1001.
What is the range of Roman numerals?
Standard Roman numerals cover 1 to 3,999 (I to MMMCMXCIX). Numbers outside this range cannot be represented with the classic seven symbols: I, V, X, L, C, D, M.
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