2009 in Roman numerals

The number 2009 is written in Roman numerals like this: MMIX

MMIX = 2009

How to write 2009 in Roman numerals

Split the number by place value and write each part in Roman numerals:

• 2000 = MM
• 9 = IX (10 − 1)

Put the parts together: MM + IX = MMIX.

When a smaller symbol comes before a larger one, it is subtracted.

As a year, 2009 is written MMIX. You often see dates like this in film credits, on buildings and on monuments.

Going the other way? See the Roman numeral MMIX.

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2008 in Roman numerals: MMVIII

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2010 in Roman numerals: MMX

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