## Binary Decimal Hexadecimal and Octal Converter

# Octal to Binary, Decimal and Hex Converter

## Binary Decimal Hexadecimal Octal bin dec hex oct converter calculator

## Binary to Decimal Decimal to Binary Hex to Decimal Decimal to Hex Octal from Octal Converter from Binary

##### Options

##### Octal system

The octal numeral system, or oct for short, is the base-8 number system. It uses the digits from 0 to 7. Octal numerals can be made from binary numerals by grouping consecutive binary digits into groups of three (starting from the right). For example, the binary representation for decimal 74 is 1001010. Two zeroes can be added at the left: (00)1 001 010, corresponding the octal digits 1 1 2, yielding the octal representation 112.

In the past some Native Americans have used octal systems because they counted using the spaces between their fingers rather than the fingers themselves.