Roman Numerals Converter & Chart
Convert any number to Roman numerals and back. Type a value below, or pick a common number, year, or round figure from the charts.
1 to 20
Tens (10–100)
Hundreds (100–1000)
Popular years
1,990MCMXC1,991MCMXCI1,992MCMXCII1,993MCMXCIII1,994MCMXCIV1,995MCMXCV1,996MCMXCVI1,997MCMXCVII1,998MCMXCVIII1,999MCMXCIX2,000MM2,001MMI2,002MMII2,003MMIII2,004MMIV2,005MMV2,006MMVI2,007MMVII2,008MMVIII2,009MMIX2,010MMX2,011MMXI2,012MMXII2,013MMXIII2,014MMXIV2,015MMXV2,016MMXVI2,017MMXVII2,018MMXVIII2,019MMXIX2,020MMXX2,021MMXXI2,022MMXXII2,023MMXXIII2,024MMXXIV2,025MMXXV2,026MMXXVI2,027MMXXVII2,028MMXXVIII2,029MMXXIX2,030MMXXX2,031MMXXXI2,032MMXXXII2,033MMXXXIII2,034MMXXXIV2,035MMXXXV
How Roman numerals work
Roman numerals use seven letters with fixed values: I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, and M = 1000. Numbers are formed by combining these symbols from largest to smallest and adding their values.
When a smaller symbol sits before a larger one, it is subtracted — so IV is 4 and IX is 9. The same rule gives XL (40), XC (90), CD (400), and CM (900). The standard system reaches up to 3,999 (MMMCMXCIX).
