Number Base Converter
Convert numbers between binary, decimal, hexadecimal, and octal. Type a value in any field — the others update automatically.
Quick Reference Table
| Decimal | Binary | Hex | Octal |
|---|---|---|---|
| 0 | 0000 | 0 | 0 |
| 1 | 0001 | 1 | 1 |
| 8 | 1000 | 8 | 10 |
| 10 | 1010 | A | 12 |
| 15 | 1111 | F | 17 |
| 16 | 10000 | 10 | 20 |
| 128 | 10000000 | 80 | 200 |
| 255 | 11111111 | FF | 377 |
| 256 | 100000000 | 100 | 400 |
| 1024 | 10000000000 | 400 | 2000 |
| 65535 | 1111111111111111 | FFFF | 177777 |