11 in Roman Numerals

11 in Roman numerals is
XI
10 + 1 = 11
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The number 11 is written XI in Roman numerals. Reading left to right and adding the values gives 10 + 1 = 11. Roman numerals use seven letters: I (1), V (5), X (10), L (50), C (100), D (500) and M (1000). A smaller letter before a larger one means subtraction (IV = 4, IX = 9, XL = 40, XC = 90, CD = 400, CM = 900).

XI in names

  • Pius XI, pope of the Catholic Church from 1922 to 1939. Wikidata
  • Innocent XI, pope of the Catholic Church from 1676 to 1689. Wikidata
  • Leo XI, pope of the Catholic Church in April 1605 (1535-1605). Wikidata
  • Louis XI of France, king of France from 1461 to 1483 (1423–1483). Wikidata
  • Clement XI, pope of the Catholic Church from 1700 to 1721. Wikidata
  • Gregory XI, pope of the Catholic Church from 1370 to 1378. Wikidata
  • Benedict XI, pope of the Catholic Church from 1303 to 1304. Wikidata
  • John XI, pope. Wikidata
  • Alfonso XI of Castile and Leon, King of Castile, León and Galicia from 1312 to 1350. Wikidata
  • Super Bowl XI, played on 9 January 1977. Wikidata

Popes, monarchs, films and Super Bowls whose name carries XI. Source: Wikidata, retrieved 11 October 2026.

Nearby & popular values

9 = IX10 = X12 = XII13 = XIII
4 = IV9 = IX14 = XIV40 = XL49 = XLIX90 = XC99 = XCIX100 = C500 = D1000 = M1984 = MCMLXXXIV1990 = MCMXC1999 = MCMXCIX2000 = MM2024 = MMXXIV2025 = MMXXV2026 = MMXXVI3999 = MMMCMXCIX

Frequently asked

What is 11 in Roman numerals?

11 in Roman numerals is XI.

How is 11 written in Roman numerals?

11 is written XI, which breaks down as 10 + 1 = 11.

Is there a Roman numeral for zero?

No. The Roman system has no symbol for zero, which is one reason it was eventually replaced for calculation.