Enter a octal number to convert it to binary instantly. Handy for Class 11–12 computer science — see the side-by-side reference table below, or open the full converter for all four bases at once.
base 8 → base 2 · Open the full converter →
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A number written in octal (base 8) is rewritten in binary (base 2). For example, 52 in octal equals 101010 in binary. The full converter at /tools/ shows binary, octal, decimal and hexadecimal together.
| Octal | Binary |
|---|---|
| 2 | 10 |
| 10 | 1000 |
| 20 | 10000 |
| 100 | 1000000 |
| 144 | 1100100 |
| 377 | 11111111 |
| 1000 | 1000000000 |
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