2001 in Roman Numerals
The number 2001 is written MMI in Roman numerals. Click the numeral below to copy it, or use the converter to try any other number.
2001 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.
MMI is purely additive: every symbol is worth what it says and you simply add them together from left to right.
2001 in Roman numerals
Also written in words as two thousand one, and read aloud as M M I.
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 2001 breaks down into Roman numerals
2000 + 1 = 2001, so MM + I = MMI.
| Place value | Roman numeral | Why | Copy |
|---|---|---|---|
| 2000 | MM | M is 1000, written 2 times | |
| 1 | I | I is 1 |
No symbol on this page matches that search. Try a shorter word.
Numbers either side of 2001
- 1996 = MCMXCVI
- 1997 = MCMXCVII
- 1998 = MCMXCVIII
- 1999 = MCMXCIX
- 2000 = MM
- 2002 = MMII
- 2003 = MMIII
- 2004 = MMIV
- 2005 = MMV
- 2006 = MMVI
Related numbers
Browse the full charts: Roman numerals hub, 1 to 100, years 1900 to 2100.
How to write 2001 in Roman numerals, step by step
Roman numerals are built from largest value to smallest. Split 2001 into place values first: 2000 + 1.
Now swap each part for its symbols: 2000 becomes MM, 1 becomes I. Written together that is MMI.
No subtraction is needed here, so the symbols are simply added in descending order.
- 2000 = MM (M is 1000, written 2 times)
- 1 = I (I is 1)
Is MMI written correctly?
Yes. MMI is the standard modern form of 2001. 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 MMI on a keyboard
Roman numerals are ordinary capital letters, so you can type MMI directly: M, M, I. 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 2001 as a date
Written as a full date, 2001 usually appears at the end: 4 July 2001 becomes IV • VII • MMI, with dots or dashes separating day, month and year.
If you are having MMI engraved or tattooed, check the spacing and the character shapes with the artist first. Roman numerals are long, and MMI is 3 characters, so it needs more room than the four digits do.
Frequently asked questions
How do you write 2001 in Roman numerals?
2001 is written MMI. Break it into 2000 + 1, then write MM + I, which joins up as MMI.
What number is MMI?
MMI is 2001, or two thousand one in words.
Is there another way to write 2001 in Roman numerals?
MMI is the standard form. Any other arrangement of the same symbols would break the rule that values are written from largest to smallest.
How do I copy MMI?
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.