Year · 20th century
1991 in Roman numerals
1991 is written MCMXCI
Type any other number or numeral below to convert it.
Above 3,999? Type the barred part in brackets, e.g. (IV)CC = 4,200.
How MCMXCI is built
Roman numerals are written one decimal place at a time, largest first.
- Mthousands · 1M is 1,000.
- CMhundreds · 9C before M means 1,000 − 100 = 900. This saves writing DCCCC.
- XCtens · 9X before C means 100 − 10 = 90. This saves writing LXXXX.
- Iones · 1I is 1.
1,000 + 900 + 90 + 1 = 1,991
The pairs CM and XC use subtraction: a smaller letter before a larger one is taken away from it. Only six pairs work this way: IV, IX, XL, XC, CD and CM. More on subtraction
Mistakes to avoid
- Not MXMI. It looks like a shortcut, but X may only come before L or C, not M. The correct form is MCMXCI.
- Not MDCCCCLXXXXI (12 letters). That adds everything up without subtraction. The Romans sometimes wrote numbers this way, and clocks still show 4 as IIII, but today MCMXCI (6 letters) is the standard.
1991 for a tattoo or engraving
- Shortened to two digits ('91), it's XCI. Many date tattoos use this shorter form.
- MCMXCI has 6 letters. 100 of the 201 years from 1900 to 2100 are longer.
- 1991 was not a leap year (365 days), and 1 January 1991 was a Tuesday.
See MCMXCI in tattoo lettering
MCMXCI in ten open-source fonts, on your skin tone, ready to download or print as a stencil.
PNG downloads are 3000 px with a transparent background. SVG downloads keep the lettering as outlines, so they look the same in any app. All fonts are open source (SIL Open Font Licence) and free to use for tattoos and products. See the font credits.
Years around 1991
Within the 1990s, every year starts MCMXC (1,990).
Every year from 1987 to 1995 starts MCM (1,900); only the ending changes.
| Number | Roman numeral |
|---|---|
| 1987 | MCMLXXXVII |
| 1988 | MCMLXXXVIII |
| 1989 | MCMLXXXIX |
| 1990 | MCMXC |
| 1991 | MCMXCI |
| 1992 | MCMXCII |
| 1993 | MCMXCIII |
| 1994 | MCMXCIV |
| 1995 | MCMXCV |