2009 in Roman Numerals
The number 2009 is written MMIX in Roman numerals. Click the numeral below to copy it, or use the converter to try any other number.
2009 is a common year to write this way: people use Roman numerals for dates on tattoos, wedding stationery, building cornerstones, book copyright lines and film credits.
Note the subtractive pair IX inside it: a smaller symbol placed before a larger one means subtract, which is why IX is 9 and not IIIIIIIII.
2009 in Roman numerals
Also written in words as two thousand nine, and read aloud as M M I X.
Roman numeral converter
Convert a number into Roman numerals, or read a Roman numeral back into a number. Works for 1 to 3999, the range the seven standard symbols can express.
How 2009 breaks down into Roman numerals
2000 + 9 = 2009, so MM + IX = MMIX.
| Place value | Roman numeral | Why | Copy |
|---|---|---|---|
| 2000 | MM | M is 1000, written 2 times | |
| 9 | IX | IX is the subtractive form for 9 |
No symbol on this page matches that search. Try a shorter word.
Numbers either side of 2009
- 2004 = MMIV
- 2005 = MMV
- 2006 = MMVI
- 2007 = MMVII
- 2008 = MMVIII
- 2010 = MMX
- 2011 = MMXI
- 2012 = MMXII
- 2013 = MMXIII
- 2014 = MMXIV
Related numbers
Browse the full charts: Roman numerals hub, 1 to 100, years 1900 to 2100.
How to write 2009 in Roman numerals, step by step
Roman numerals are built from largest value to smallest. Split 2009 into place values first: 2000 + 9.
Now swap each part for its symbols: 2000 becomes MM, 9 becomes IX. Written together that is MMIX.
The pair IX must stay in that order. IX means "one before 10", so it is read as 9.
- 2000 = MM (M is 1000, written 2 times)
- 9 = IX (IX is the subtractive form for 9)
Is MMIX written correctly?
Yes. MMIX is the standard modern form of 2009. A valid Roman numeral never repeats a symbol more than three times in a row, never repeats V, L or D at all, and only ever subtracts I, X or C, and only from the next two larger symbols.
Those rules are what keeps a number to a single accepted spelling, so a reader never has to guess.
How to type MMIX on a keyboard
Roman numerals are ordinary capital letters, so you can type MMIX directly: M, M, I, X. Nothing special is required and it will work in any font, any document and any web form.
Unicode also contains dedicated Roman numeral characters such as Ⅰ, Ⅴ, Ⅹ, Ⅼ, Ⅽ, Ⅾ and Ⅿ. They exist for typesetting East Asian text and they look almost identical, but search engines, spell checkers and screen readers handle the plain letters better, so the letters are usually the right choice.
Using 2009 as a date
Written as a full date, 2009 usually appears at the end: 4 July 2009 becomes IV • VII • MMIX, with dots or dashes separating day, month and year.
If you are having MMIX engraved or tattooed, check the spacing and the character shapes with the artist first. Roman numerals are long, and MMIX is 4 characters, so it needs more room than the four digits do.
Frequently asked questions
How do you write 2009 in Roman numerals?
2009 is written MMIX. Break it into 2000 + 9, then write MM + IX, which joins up as MMIX.
What number is MMIX?
MMIX is 2009, or two thousand nine in words.
Is there another way to write 2009 in Roman numerals?
Not in standard use. MMIX is the accepted form because Roman numerals subtract rather than repeat a symbol four times.
How do I copy MMIX?
Click the large numeral at the top of this page. It copies straight to your clipboard, ready to paste anywhere.
Do Roman numerals have a zero?
No. The system has no symbol for zero and no way to write a negative number or a fraction of one, which is one reason it was replaced for arithmetic.