Enter a octal number to convert it to decimal 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 10 · Open the full converter →
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A number written in octal (base 8) is rewritten in decimal (base 10). For example, 100 in octal equals 64 in decimal. The full converter at /tools/ shows binary, octal, decimal and hexadecimal together.
| Octal | Decimal |
|---|---|
| 1 | 1 |
| 10 | 8 |
| 12 | 10 |
| 20 | 16 |
| 100 | 64 |
| 144 | 100 |
| 377 | 255 |
| 1000 | 512 |
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