3 in Roman Numerals
The number 3 is written III in Roman numerals. Reading left to right and adding the values gives 1 + 1 + 1 = 3. 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).
III in names
- Charles III, King of the United Kingdom since 2022 (born 1948). Wikidata
- Napoleon III, President of the Second French Republic, Emperor of the Second French Empire and last monarch of France (1808–1873). Wikidata
- George III of Great Britain, King of Great Britain and Ireland from 1760 to 1820 (1738–1820). Wikidata
- Alexander III of Russia, Emperor of Russia from 1881 to 1894. Wikidata
- Innocent III, Head of the Catholic Church from 1198 to 1216. Wikidata
- Paul III, pope of the Catholic Church from 1534 to 1549 (1468–1549). Wikidata
- William III of England, King of England, Scotland, and Ireland from 1689 to 1702 (1650-1702). Wikidata
- Richard III of England, king of England from 1483 to 1485. Wikidata
- Alexander III, pope of the Catholic Church from 1159 to 1181. Wikidata
- Callixtus III, pope of the Catholic Church from 1455 to 1458 from the Borgia family. Wikidata
- Leo III, Pope of the Catholic Church from 795 to 816 (born 750–816). Wikidata
- Peter III of Russia, The seventh Emperor of Russia, 1762 (lived 1728-1762). Wikidata
Popes, monarchs, films and Super Bowls whose name carries III. Source: Wikidata, retrieved 11 October 2026.
Nearby & popular values
Frequently asked
What is 3 in Roman numerals?
3 in Roman numerals is III.
How is 3 written in Roman numerals?
3 is written III, which breaks down as 1 + 1 + 1 = 3.
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.