Decimal to octal converter
Enter a whole decimal number.
Convert a decimal number to octal.
About this tool
The decimal to octal converter changes a whole base 10 number into base 8 notation. Use it for number system exercises, checking Unix permission examples, or working with a legacy format that stores values in octal. The converter accepts positive and negative decimal integers. It returns the same numeric value written with digits from zero through seven, ready to copy into notes or code.