2018 in Roman Numerals
2018 is MMXVIII. XVIII is X plus V plus three I strokes, the longest simple run of the 2010s.
How MMXVIII is formed
M + M + X + V + I + I + I = 1000 + 1000 + 10 + 5 + 1 + 1 + 1 = 2018.
Where MMXVIII is used
A year numeral turns up in different places from a bare number. These are the four that send people looking for MMXVIII.
- Date tattoos and engravings. A year-only piece is just MMXVIII, and a full date stacks the day and month above it. MMXVIII is 7 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 2018 carries MMXVIII 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 MMXVIII 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 2018 is 8 years old, so MMXVIII is the numeral for a 8th anniversary this year. Wedding and birth years are the two most common reasons to want MMXVIII written correctly.
Convert another year or number
2018 is written MMXVIII in Roman numerals.
Frequently asked questions
How do you write the year 2018 in Roman numerals?
The year 2018 is written MMXVIII. Reading left to right that is M (1000) + M (1000) + X (10) + V (5) + I (1) + I (1) + I (1), added together to reach 2018.
Why does MMXVIII start with MM?
MM is the numeral for 2000, and every year from 2000 to 2099 opens with it. The letters after it, XVIII, carry the remaining 18.
How is the year 2018 different from the number 2018?
They share the numeral MMXVIII, but the year page focuses on dates, tattoos and dedications, while the number covers counting, chapters and general use. Same letters, different context.
Where will I see MMXVIII written down?
MMXVIII turns up on film and television copyright lines, foundation stones, memorials and date tattoos. If you are reading MMXVIII off a title sequence or a building, you have found the year 2018.
Years people look up next
The decade anchors either side of 2018, its immediate neighbours, and the quarter and half century marks that anniversaries land on.