Octal | Decimal |
---|---|

0 | 0 |

1 | 1 |

2 | 2 |

3 | 3 |

4 | 4 |

5 | 5 |

6 | 6 |

7 | 7 |

10 | 8 |

11 | 9 |

12 | 10 |

13 | 11 |

14 | 12 |

15 | 13 |

16 | 14 |

17 | 15 |

20 | 16 |

21 | 17 |

22 | 18 |

23 | 19 |

24 | 20 |

25 | 21 |

26 | 22 |

27 | 23 |

30 | 24 |

31 | 25 |

32 | 26 |

33 | 27 |

34 | 28 |

35 | 29 |

36 | 30 |

37 | 31 |

40 | 32 |

41 | 33 |

42 | 34 |

43 | 35 |

44 | 36 |

45 | 37 |

46 | 38 |

47 | 39 |

50 | 40 |

51 | 41 |

52 | 42 |

53 | 43 |

54 | 44 |

55 | 45 |

56 | 46 |

57 | 47 |

60 | 48 |

61 | 49 |

62 | 50 |

63 | 51 |

64 | 52 |

65 | 53 |

66 | 54 |

67 | 55 |

70 | 56 |

71 | 57 |

72 | 58 |

73 | 59 |

74 | 60 |

75 | 61 |

76 | 62 |

77 | 63 |

Octal | Decimal |
---|---|

100 | 64 |

101 | 65 |

102 | 66 |

103 | 67 |

104 | 68 |

105 | 69 |

106 | 70 |

107 | 71 |

110 | 72 |

111 | 73 |

112 | 74 |

113 | 75 |

114 | 76 |

115 | 77 |

116 | 78 |

117 | 79 |

120 | 80 |

121 | 81 |

122 | 82 |

123 | 83 |

124 | 84 |

125 | 85 |

126 | 86 |

127 | 87 |

130 | 88 |

131 | 89 |

132 | 90 |

133 | 91 |

134 | 92 |

135 | 93 |

136 | 94 |

137 | 95 |

140 | 96 |

141 | 97 |

142 | 98 |

143 | 99 |

144 | 100 |

145 | 101 |

146 | 102 |

147 | 103 |

150 | 104 |

151 | 105 |

152 | 106 |

153 | 107 |

154 | 108 |

155 | 109 |

156 | 110 |

157 | 111 |

160 | 112 |

161 | 113 |

162 | 114 |

163 | 115 |

164 | 116 |

165 | 117 |

166 | 118 |

167 | 119 |

170 | 120 |

171 | 121 |

172 | 122 |

173 | 123 |

174 | 124 |

175 | 125 |

176 | 126 |

177 | 127 |

The decimal to octal table helps you to convert decimal numbers to octal numbers. Decimal numbers use a base 10 digit system that has ten digits. Octal is a base 8 digit system that has 8 digits. This means that the first eight digits are the same in both systems. However the ninth digit (8 in decimal) is represented as 10 in octal.

- Octal is a base 8 system
- Decimal is a base 10 system
- Octal uses digits 0-7
- Decimal uses the digits 0-7
- Three binary digits can be directly transformed to 1 octal digits
- Octal was used in early computer processors
- Octal was used in programming languages such as assembly
- Octal has places values that are powers of 8

To convert a decimal number to octal you need to take the decimal number and decide it by 8. From here, record both the quotient and remainder. Putting the remainder to one side, continue to divide the quotient until it is zero. Combine the remainders (from last to first) to get your result. Alternatively use our free octal to decimal conversion calculator.