80 in binary = 1010000 (101 0000)
In other bases: hexadecimal 50, octal 120. The binary number has 7 bits.
Divide by 2 repeatedly and note each remainder. Read the remainders from bottom to top.
| Division | Quotient | Remainder |
|---|---|---|
| 80 ÷ 2 | 40 | 0 |
| 40 ÷ 2 | 20 | 0 |
| 20 ÷ 2 | 10 | 0 |
| 10 ÷ 2 | 5 | 0 |
| 5 ÷ 2 | 2 | 1 |
| 2 ÷ 2 | 1 | 0 |
| 1 ÷ 2 | 0 | 1 |
Remainders bottom to top: 1010000.
| Power of 2 | 64 | 32 | 16 | 8 | 4 | 2 | 1 |
|---|---|---|---|---|---|---|---|
| Bit | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
Add the powers of 2 where the bit is 1: 64 + 16 = 80.
Need another number or the reverse direction? Use the binary to decimal converter or the text to binary converter.
| Decimal | Binary | Hex | Octal |
|---|---|---|---|
| 76 | 1001100 | 4C | 114 |
| 77 | 1001101 | 4D | 115 |
| 78 | 1001110 | 4E | 116 |
| 79 | 1001111 | 4F | 117 |
| 81 | 1010001 | 51 | 121 |
| 82 | 1010010 | 52 | 122 |
| 83 | 1010011 | 53 | 123 |
| 84 | 1010100 | 54 | 124 |