# Convert roman numerals with Excel

This article will show you how easy it is to convert numbers to roman numerals, or vice versa, with Excel.

## Roman numerals

Roman numerals are represented by combinations of letters

• I = 1
• V = 5
• X = 10
• L = 50
• C = 100
• D = 500
• M = 1000

To create a number, you just have write as many letters corresponding to the value you want to express

• 3 = III
• 25 = XXV
• 178 = CLXXVIII

There is a specific notation to use when you reach a new level.

For instance of 4, you can write IIII but it's confusing with III. So the best way to represent it is as 5 minus 1, which roman numerals is IV

Other examples of subtractive notation:

• 9 = IX
• 40 = XL
• 90 = XC
• 99 = XCIX

## Use of roman numerals

Roman numerals are still use in certain situations:

• Chapter Numbers in books
• Production Year of a movie or television documentary
• Commemorative Inscription, for example, on the book that the Statue of Liberty is holding
• Important Texts, like the constitution

## Convert numbers to roman numerals

With Excel, it's very easy to convert any number to its roman numerals with the function ROMAN

=ROMAN(Number)

The font used for the roman numerals is "Georgia"

## Convert roman numerals to numbers

Since Excel 2013, you can also convert a roman numerals to numbers with the function ARABIC

=ARABIC(Roman numerals)