Roman numeral

Other spellings

• roman numeral

Noun

Singular Roman numeral

Plural Roman numerals

A clock with Roman numerals

Roman numerals on a boat

1. A roman numeral is a way of writing numbers used in Rome a long time ago. We do not write numbers like this much now. This is most often used to name parts of a series. Example are "I" (1), "II" (2), "III" (3), and "IV" (4).

Numerals

• I (1)
• II (2)
• III (3)
• IV (4)
• V (5)
• VI (6)
• VII (7)
• VIII (8)
• IX (9)
• X (10)
• XX (20)
• XXX (30)
• XL (40)
• L (50)
• LX (60)
• LXX (70)
• LXXX (80)
• XC (90)
• C (100)
• CC (200)
• CCC (300)
• CD (400)
• D (500)
• DC (600)
• DCC (700)
• DCCC (800)
• CM (900)
• M (1,000)
• MM (2,000)
• MMM (3,000)

Related words

• Rome
• Roman
• numeral, number