Years in Roman numerals — 1900 to 2100
A birth year for a tattoo, the copyright line at the end of a film, a watch face. Each year is broken into its pieces so you can see why it is written that way.
Seven letters and six subtractive pairs
These thirteen rows are the whole system. Subtract the largest value you can, over and over, and any year falls out.
Why IV and not IIII
Because the same letter is never repeated four times. Six pairs put a smaller letter first so it is subtracted: IV (4), IX (9), XL (40), XC (90), CD (400), CM (900).
The longest and the shortest
1988 is MCMLXXXVIII, eleven letters. The year 2000 is just MM, two letters — and they are only twelve years apart.
Decade by decade
If you know roughly when, you can pick the year straight from here.
1880s
1890s
1900s
1910s
1920s
1930s
1940s
1950s
1960s
1970s
1980s
1990s
2000s
2010s
2020s
2030s
2040s
2050s
2060s
2070s
2080s
2090s
2100s
2110s
2120s
How to read this
- Add from the left, but subtract when a smaller letter comes before a larger one.
- There are only seven letters: M=1000, D=500, C=100, L=50, X=10, V=5, I=1.
- The same letter repeats at most three times — the fourth becomes a subtractive pair.
- There is no zero, and the largest place value is always written first.
Frequently asked questions
QIs there a zero in Roman numerals?
No. An empty place is simply skipped — that is why the year 2000 is only MM.
QI have seen clocks with IIII for four.
Clock faces often keep the older IIII, said to balance the VIII opposite it. In writing, IV is the standard.
QHow are numbers above 3999 written?
A bar over a letter multiplies it by 1000. Years almost never need it, so it is left out here.
QHow do I write a date for a tattoo?
Write day, month and year each in Roman numerals, separated by dots or slashes: 7 March 1994 becomes VII · III · MCMXCIV.
QWhy start at 1900?
Small numbers already get a page each in the number reference, so this section covers only the years people actually look up.