3 in Roman Numerals

The number 3 written in Roman numerals is III.

3
=
III

How III is built:

II= 2
I= 1
III= 3
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Looking up the other way? III in Arabic numbers is 3. Use the full converter to enter any Roman numeral:

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Frequently asked questions
What is 3 in Roman numerals?
3 in Roman numerals is III. It is built from II (2) + I (1) = 3.
How do you write 3 in Roman numerals?
To write 3 in Roman numerals, identify the largest Roman symbols that fit: 2 = II, 1 = I. Write them left to right: III.
What does III mean?
III is the Roman numeral for 3. The symbols represent: II = 2, I = 1, which add up to 3.
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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