Binary to octal converter
Enter a value that uses only 0 and 1.
Convert a binary number to octal.
About this tool
The binary to octal converter changes a base 2 number into base 8 notation. Use it to study number systems, connect permission bits with Unix file modes, or shorten a long binary value for a worksheet. Every group of three binary digits maps to one octal digit. Enter a whole binary number made from zeros and ones to get the matching octal result.