IX in Roman numerals = 9 in Decimal
IX in Roman numerals is
1001 in binary, 9 in decimal, 9 in hexadecimal and 11 in octal.
IX Roman numerals = 9 decimal
IX in every number system
| System | Written as |
|---|---|
| Binary (base 2) | 1001 |
| Decimal (base 10) | 9 |
| Hexadecimal (base 16) | 9 |
| Octal (base 8) | 11 |
| Duodecimal (base 12) | 9 |
| Ternary (base 3) | 100 |
| Base 36 | 9 |
| Vigesimal (base 20) | 9 |
| Quaternary (base 4) | 21 |
| Quinary (base 5) | 14 |
| Senary (base 6) | 13 |
How to read IX in Roman numerals
Roman numerals to decimal
Split IX into its symbols, reading a smaller symbol before a larger one as a subtraction:
IX = 9 = 9
About the number 9
- 9 is an odd number.
- 9 is not a prime number.
- 9 is a perfect square: 3 × 3.
- Written in binary it needs 4 bits, so it fits in one byte.