9 in Roman numerals is IX
The Arabic number 9 is written as IX in Roman numerals. Below you can see the parts it is built from.
9 in Roman numerals
IX
How is {n} written in Roman numerals?
Roman numerals run from the largest value to the smallest: IX = 9. In total IX = 9. A smaller symbol before a larger one means subtraction (IV = 4, IX = 9, XL = 40, CM = 900). Roman numerals cover numbers 1-3999.