42 in Roman Numerals

The number 42 written in Roman numerals is XLII.

42
=
XLII

How XLII is built:

XL= 40
II= 2
XLII= 42
Reverse lookup

Looking up the other way? XLII in Arabic numbers is 42. Use the full converter to enter any Roman numeral:

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Frequently asked questions
What is 42 in Roman numerals?
42 in Roman numerals is XLII. It is built from XL (40) + II (2) = 42.
How do you write 42 in Roman numerals?
To write 42 in Roman numerals, identify the largest Roman symbols that fit: 40 = XL, 2 = II. Write them left to right: XLII.
What does XLII mean?
XLII is the Roman numeral for 42. The symbols represent: XL = 40, II = 2, which add up to 42.
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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