9 in Roman Numerals
9 = IX
9 is written IX in Roman numerals.
Step by step
- Split 9 into place values: 9.
- 9 = IX
- Join them from largest to smallest: IX.
To read IX back, go from left to right and add each value, treating a smaller symbol before a larger one as a single subtracted pair: IX (9) = 9.
Details
- Symbols used
- I = 1, X = 10
- Roman numeral
- IX
- Breakdown
- IX
- Number of symbols
- 2
- Lowercase
- ix
- Uses subtraction
- Yes (IX)
How it works
Roman numerals combine seven symbols — I (1), V (5), X (10), L (50), C (100), D (500) and M (1,000). Write each place value of the number separately, from thousands down to ones, and join the results. Six subtractive pairs replace four repeated symbols: IV (4), IX (9), XL (40), XC (90), CD (400) and CM (900). No symbol appears more than three times in a row.
Nearby values
Related conversions
Frequently asked questions
What is 9 in Roman numerals?
IX.
How do you write 9 in Roman numerals?
Break it into IX (9) and write IX.
What number is IX?
IX = 9.
What is the largest standard Roman numeral?
3,999, written MMMCMXCIX.