15 in Roman Numerals

15 in Roman numerals is
XV
10 + 5 = 15
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The number 15 is written XV in Roman numerals. Reading left to right and adding the values gives 10 + 5 = 15. 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).

XV in names

  • Benedict XV, Pope of the Catholic Church from 1914 to 1922. Wikidata
  • Louis XV of France, King of France and Navarre 1715 to 1774 (1710–1774). Wikidata
  • Gregory XV, pope of the Catholic Church from 1621 to 1623 (1554–1623). Wikidata
  • John XV, pope. Wikidata
  • Carl XV of Sweden, King of Sweden and Norway (1859-1872). Wikidata
  • Super Bowl XV, played on 25 January 1981. Wikidata

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

Nearby & popular values

13 = XIII14 = XIV16 = XVI17 = XVII
4 = IV9 = IX14 = XIV40 = XL49 = XLIX90 = XC99 = XCIX100 = C500 = D1000 = M1984 = MCMLXXXIV1990 = MCMXC1999 = MCMXCIX2000 = MM2024 = MMXXIV2025 = MMXXV2026 = MMXXVI3999 = MMMCMXCIX

Frequently asked

What is 15 in Roman numerals?

15 in Roman numerals is XV.

How is 15 written in Roman numerals?

15 is written XV, which breaks down as 10 + 5 = 15.

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.