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4 in Roman Numerals

How to write the number 4 in Roman numerals, with the full place-value breakdown.

The number 4 in Roman numerals

IV

Place-value breakdown

4 = 4, so IV = IV. Roman numerals are written from largest to smallest value, left to right:

PlaceValueRomanRule
Ones4IVSubtractive rule: IV = 5 − 1 (a smaller symbol before a larger one is subtracted)

About the number 4

The number 4 is written IV in Roman numerals.

Looking for the ordinal form — "4th in Roman numerals"? Roman notation makes no distinction between cardinal and ordinal numbers, so "4th" is also written IV.

Convert any number

Roman numeral

IV

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