2011 in Roman Numerals = MMXI
2011 is written MMXI in Roman numerals, 15 years in the past. Reading left to right, M + M + X + I add up to 2011, which is exactly why Roman-numeral years suit tattoos and dedications: the letters carry the date without a single Arabic digit.
What is 2011 in Roman numerals?
What year is MMXI?
MMXI is the year 2011. Reading left to right, M (1000) + M (1000) + X (10) + I (1) add up to 2011. Every year from 2000 to 2099 opens with MM, so on a datestone or an end card it is the XI after the MM that marks out 2011 exactly.
How MMXI is formed
M + M + X + I = 1000 + 1000 + 10 + 1 = 2011.
Where MMXI is used
A year numeral turns up in different places from a bare number. These are the four that send people looking for MMXI.
- Date tattoos and engravings. A year-only piece is just MMXI, and a full date stacks the day and month above it. MMXI is 4 characters long, which matters more than people expect: it sets how wide the bottom line of a stacked date will sit.
- Copyright lines in credits. Film and television end credits have long set the copyright year in Roman numerals, so a production from 2011 carries MMXI on its end card. If you are reading a numeral off a title sequence rather than writing one, this is usually the one you have found.
- Cornerstones and dedications. Buildings, monuments and foundation stones carry their year in numerals, which is why MMXI turns up carved rather than typed. Every year between 2000 and 2099 opens with MM, so on a datestone it is the letters after MM that tell you which year you are actually looking at.
- Anniversaries. In 2026, a date from 2011 is 15 years old, so MMXI is the numeral for a 15th anniversary this year. Wedding and birth years are the two most common reasons to want MMXI written correctly.
Reading MMXI closely
- MMXI is 4 characters long, 1 character longer than 2010 (MMX) and 1 character shorter than 2012 (MMXII).
- MMXI is purely additive: every glyph is added to the one before it, with no subtractive pair anywhere in the year. Read it straight through from left to right and the value falls out.
- A date from 2011 is 15 years old in 2026, so its round anniversaries land in 2036, 2061 and 2111.
- It uses 3 of the seven symbols, and M appears 2 times. For a tattoo that matters: repeated upright strokes are the pairs most likely to merge as ink settles, so they want the extra spacing.
Convert another year or number
2011 is written MMXI in Roman numerals.
Frequently asked questions
How do you write the year 2011 in Roman numerals?
The year 2011 is written MMXI. Reading left to right that is M (1000) + M (1000) + X (10) + I (1), added together to reach 2011.
What year is MMXI?
MMXI is the year 2011. If you found MMXI in film credits, on a foundation stone or in a date tattoo, it reads as 2011. Any other numeral can be decoded the same way with the converter on this page.
Why does MMXI start with MM?
MM is the numeral for 2000, and every year from 2000 to 2099 opens with it. The letters after it, XI, carry the remaining 11.
Where will I see MMXI written down?
MMXI turns up on film and television copyright lines, foundation stones, memorials and date tattoos. If you are reading MMXI off a title sequence or a building, you have found the year 2011.
Years people look up next
The decade anchors either side of 2011, its immediate neighbours, and the quarter and half century marks that anniversaries land on.