1001 Binary to Hexadecimal
1001 binary = 9 hexadecimal
1001 written in hexadecimal is 9, the number 9 in everyday decimal.
1001 binary = 9 hexadecimal
How to convert 1001 to hexadecimal
Because 16 = 24, every hexadecimal digit stands for exactly 4 binary digits. Split the binary number into groups of 4 from the right (adding leading zeros), then write each group as one hexadecimal digit:
| Binary group | Hexadecimal digit |
|---|---|
1001 | 9 |
Result: 1001 in binary = 9 in hexadecimal.
1001 (binary) in other systems
| Decimal | 9 |
| Roman numerals | IX |
| Octal | 11 |
| Duodecimal | 9 |
| Ternary | 100 |
| Base 36 | 9 |
| Vigesimal | 9 |
| Quaternary | 21 |
| Quinary | 14 |
| Senary | 13 |
Nearby binary to hexadecimal conversions
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.
Reverse conversion
Frequently asked questions
What is 1001 in hexadecimal?
1001 in binary is 9 in hexadecimal (the number 9 in decimal).