Octal to Decimal Converter
Convert octal to decimal online for free — paste an octal number and get the decimal value plus hex and binary. Instant, no upload.
| Binary | 10101101 |
|---|---|
| Octal | 255 |
| Decimal | 173 |
| Hexadecimal | AD |
| Grouped hex | AD |
About Octal to Decimal Converter
Paste an octal number — with or without the 0o prefix — and the decimal value appears instantly, alongside hex and binary. Useful for decoding Unix permission modes and legacy constants.
Octal input is preselected on this page; switch the base radio if your value is decimal, hex or binary. Conversion runs locally in your browser.