We have already studied the octal number system and hexadecimal number system and worked on few solved examples to understand the representation of octal numbers and the representation of hexadecimal numbers.

## Octal vs Hexadecimal Comparison

Hexadecimal Numbers | Octal Numbers |
---|---|

It uses 16 different symbols or digits for representing hexadecimal numbers, [0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F]. | Octal numbers use only 8 symbols or digits to represent all the octal numbers. Therefore, it can have digits from 0 to 7 only. |

The radix or base for hexadecimal numbers is 16. | The radix or the base for octal number is 8. |

Easier to represent and remember large numbers. | Easy to represent using octal number system but difficult to remember large numbers. |

Example of Hexadecimal number: FF (Equivalent to Two hundred and fifty-five in decimal) | Example of Binary number: 377 (Equivalent to Two hundred and fifty-five in decimal) |

It takes 4 bits or 4 Binary digits to represent a single Hexadecimal digit. | It takes only 3 bits or 3 Binary digits to represent an Octal digit. |

Since the hexadecimal number system uses 16 digits, the arithmetic and logical operations could become complex. | On the other hand, the Octal number system uses a lesser number of digits (8). This makes performing arithmetic and logic operations easy compared to the hexadecimal number system. |

Representing large decimal numbers in the hexadecimal number system is easier. | Representing large decimal numbers in octal becomes difficult and large. |