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Roman numerals: table and conversion

How to write numbers in Roman numerals. Basic symbols, common numbers and years with their Roman notation.

Works both ways – enter a number or a Roman numeral (I, V, X, L, C, D, M). Roman numerals have no zero and the standard notation ends at 3,999 (MMMCMXCIX).

Basic symbols

Symbol Value Symbol Value
I 1 C 100
V 5 D 500
X 10 M 1 000
L 50

A smaller symbol before a larger one is subtracted: IV = 4, IX = 9, XL = 40, XC = 90, CD = 400, CM = 900. The same symbol repeats at most three times.

Common numbers and years

Number Roman Number Roman
4 IV 1918 MCMXVIII
9 IX 1948 MCMXLVIII
14 XIV 1968 MCMLXVIII
40 XL 1989 MCMLXXXIX
49 XLIX 2000 MM
90 XC 2020 MMXX
444 CDXLIV 2026 MMXXVI
999 CMXCIX 3999 MMMCMXCIX

Other tables

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