11 Decimal to Binary
11 decimal = 1011 binary
11 written in binary is 1011.
11 decimal = 1011 binary
How to convert 11 to binary
Decimal to binary
Divide by 2 repeatedly and keep the remainders. Reading the remainders from the last one to the first gives the binary digits:
| Division | Quotient | Remainder (digit) |
|---|---|---|
| 11 ÷ 2 | 5 | 1 |
| 5 ÷ 2 | 2 | 1 |
| 2 ÷ 2 | 1 | 0 |
| 1 ÷ 2 | 0 | 1 |
Result: 11 = 1011 in binary.
11 (decimal) in other systems
| Roman numerals | XI |
| Hexadecimal | B |
| Octal | 13 |
| Duodecimal | B |
| Ternary | 102 |
| Base 36 | B |
| Vigesimal | B |
| Quaternary | 23 |
| Quinary | 21 |
| Senary | 15 |
Nearby decimal to binary conversions
| 6 to binary | 110 |
| 7 to binary | 111 |
| 8 to binary | 1000 |
| 9 to binary | 1001 |
| 10 to binary | 1010 |
| 12 to binary | 1100 |
| 13 to binary | 1101 |
| 14 to binary | 1110 |
| 15 to binary | 1111 |
| 16 to binary | 10000 |
About the number 11
- 11 is an odd number.
- 11 is a prime number.
- Written in binary it needs 4 bits, so it fits in one byte.
Reverse conversion
Frequently asked questions
What is 11 in binary?
11 in decimal is 1011 in binary.