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Octal (Positional systems), numerals

The octal numeral system is the base-8 number system, and uses the digits 0 to 7. Octal numerals can be made from binary numerals by grouping consecutive digits into groups of three (starting from the right). For example, the binary representation for decimal 74 is 1001010, which groups into 1 001 010 — so the octal representation is 112. Octal is sometimes used in computing instead of hexadecimal.

Type the number of Octal you want to convert in the text box, to see the results in the table.

100 Octal
is equal to
40

Positional systems

Numeral systems

Languages

  • English

    sixty four

  • German

    vierundsechzig

  • Spanish

    sesenta y cuatro

  • Swedish

    sextiofyra

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