220 in binary = 11011100 (1101 1100)
In other bases: hexadecimal DC, octal 334. The binary number has 8 bits.
Divide by 2 repeatedly and note each remainder. Read the remainders from bottom to top.
| Division | Quotient | Remainder |
|---|---|---|
| 220 ÷ 2 | 110 | 0 |
| 110 ÷ 2 | 55 | 0 |
| 55 ÷ 2 | 27 | 1 |
| 27 ÷ 2 | 13 | 1 |
| 13 ÷ 2 | 6 | 1 |
| 6 ÷ 2 | 3 | 0 |
| 3 ÷ 2 | 1 | 1 |
| 1 ÷ 2 | 0 | 1 |
Remainders bottom to top: 11011100.
| Power of 2 | 128 | 64 | 32 | 16 | 8 | 4 | 2 | 1 |
|---|---|---|---|---|---|---|---|---|
| Bit | 1 | 1 | 0 | 1 | 1 | 1 | 0 | 0 |
Add the powers of 2 where the bit is 1: 128 + 64 + 16 + 8 + 4 = 220.
Need another number or the reverse direction? Use the binary to decimal converter or the text to binary converter.
| Decimal | Binary | Hex | Octal |
|---|---|---|---|
| 216 | 11011000 | D8 | 330 |
| 217 | 11011001 | D9 | 331 |
| 218 | 11011010 | DA | 332 |
| 219 | 11011011 | DB | 333 |
| 221 | 11011101 | DD | 335 |
| 222 | 11011110 | DE | 336 |
| 223 | 11011111 | DF | 337 |
| 224 | 11100000 | E0 | 340 |