Base Calculator
Convert any number between all common bases — Binary, Octal, Decimal, Hexadecimal, Base-32, Base-36 — and any custom base from 2 to 36. Includes a bit-level visualiser, nibble grouping, and a quick reference table.
Quick reference — Decimal · Binary · Octal · Hex
| Decimal | Binary | Octal | Hex | Hex (padded) |
|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 00 |
| 1 | 1 | 1 | 1 | 01 |
| 2 | 10 | 2 | 2 | 02 |
| 3 | 11 | 3 | 3 | 03 |
| 4 | 100 | 4 | 4 | 04 |
| 5 | 101 | 5 | 5 | 05 |
| 6 | 110 | 6 | 6 | 06 |
| 7 | 111 | 7 | 7 | 07 |
| 8 | 1000 | 10 | 8 | 08 |
| 9 | 1001 | 11 | 9 | 09 |
| 10 | 1010 | 12 | A | 0A |
| 11 | 1011 | 13 | B | 0B |
| 12 | 1100 | 14 | C | 0C |
| 13 | 1101 | 15 | D | 0D |
| 14 | 1110 | 16 | E | 0E |
| 15 | 1111 | 17 | F | 0F |
| 16 | 10000 | 20 | 10 | 10 |
| 31 | 11111 | 37 | 1F | 1F |
| 32 | 100000 | 40 | 20 | 20 |
| 63 | 111111 | 77 | 3F | 3F |
| 64 | 1000000 | 100 | 40 | 40 |
| 127 | 1111111 | 177 | 7F | 7F |
| 128 | 10000000 | 200 | 80 | 80 |
| 255 | 11111111 | 377 | FF | FF |