Use the below conversion tool to convert a **Octal number to Binary number:**

Octal Number | |

Binary Number |

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## Octal Number

Octal numbers use digits from 0-7 only. It is known as *base-8 number*. The place value of each digits of an octal number varies as the whole number *powers of 8* starting from the right (Least Significant Digit). The first single digit number in octal system is 0 and the last is 7. Similarly, the first two digit octal number is 10 and the last is 77 and so on. Octal number system was widely used in early computers.

## Binary number

Binary numbering system uses only two symbols 0 and 1. Each digits of a binary number is referred to as bits. Binary system is also known as base -2 system. Each digit is represented by the increasing power of 2 from the LSB (Least Significant Bit). Binary system is the heart of digital electronics and is used for information flow. In digital electronics, 0 and 1 are used to denote logic states, high and low. Arithmetic operations are also possible in binary system.

## Example for Octal to binary conversion

### Example-1: Convert 654_{8} to binary

From the below conversion table:

Octal number | 6 | 5 | 4 |

Binary number | 110 | 101 | 100 |

Hence, 654_{8} in its binary form is equivalent to 110101100_{8}

### Example-2: Convert 273_{8} to binary

From the below conversion table:

Octal number | 2 | 7 | 3 |

Binary number | 010 | 111 | 011 |

Hence, 273_{8} in its binary form is equivalent to 10111011_{8}

### Read More: How to convert an octal number to a binary number

## Octal to Binary conversion table

Octal Number | Binary Number | Decimal Number |
---|---|---|

0 | 000 | 0 |

1 | 001 | 1 |

2 | 010 | 2 |

3 | 011 | 3 |

4 | 100 | 4 |

5 | 101 | 5 |

6 | 110 | 6 |

7 | 111 | 7 |

10 | 1000 | 8 |

11 | 1001 | 9 |

12 | 1010 | 10 |

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