Calculator of the octal number system

This online service translates the number from the octal notation system to any other. The number can be any non-negative. The base of the notation system for the translation from 2 to 36 inclusive.

In the form of a calculator, enter a number in the octal system, then specify the notation system to which you want to translate the number and click "Calculate".


A notation system, or numbering, is a set of rules and signs that can be used to map (encode) any non-negative number. There are certain requirements on the number systems, among which the most important are the requirements for unambiguous coding of nonnegative numbers 0, 1,... from some finite set of the range P in a finite number of steps and the ability to perform numerically arithmetic and logical operations. In addition, the number system solves the numbering problem, that is, an effective transition from digits to numbers, which in this case must have a minimum number of digits. From the successful or unsuccessful choice of the number system depends the effectiveness of solving these problems and its use in practice.

Octal number system - positional integer number system with base 8. Numbers in it are represented by digits 0 to 7.

The octal system is often used in industries related to digital devices. Characterized by an easy conversion of octal numbers to binary and back, by replacing octal numbers with triplets of binary ones. Previously, it was widely used in programming and general computer documentation, but nowadays it is almost completely replaced by a hexadecimal one. The octal system specifies the permissions for the chmod command on Unix-like operating systems.