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Base 8 to Base 18

Base 8 to Base 18 Converter

Enter a number in base 8 below to convert it to base 18 instantly.

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About These Bases

Base 8

In base 8, each digit position represents a power of 8: the rightmost digit counts individual ones, the next counts groups of 8, the next counts groups of 8×8, and so on — the same place-value idea as base 10, just with 8 distinct digits instead of ten.

Base 18

Base 18 works the same way: the rightmost digit counts ones, the next counts groups of 18, the next counts groups of 18×18, and so on, using 18 distinct digits.

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Quick Reference Table
Base 10 Base 8 Base 18
1 1 1
2 2 2
3 3 3
4 4 4
5 5 5
6 6 6
7 7 7
8 10 8
9 11 9
10 12 A
11 13 B
12 14 C
13 15 D
14 16 E
15 17 F
16 20 G
17 21 H
18 22 10
19 23 11
20 24 12
21 25 13
22 26 14
23 27 15
24 30 16
25 31 17
26 32 18
27 33 19
28 34 1A
29 35 1B
30 36 1C
31 37 1D
32 40 1E
33 41 1F
34 42 1G
35 43 1H
36 44 20
37 45 21
38 46 22
39 47 23
40 50 24
41 51 25
42 52 26
43 53 27
44 54 28
45 55 29
46 56 2A
47 57 2B
48 60 2C
49 61 2D
50 62 2E
51 63 2F
52 64 2G
53 65 2H
54 66 30
55 67 31
56 70 32
57 71 33
58 72 34
59 73 35
60 74 36
61 75 37
62 76 38
63 77 39
64 100 3A
70 106 3G
80 120 48
90 132 50
100 144 5A
200 310 B2
300 454 GC
400 620 144
500 764 19E
600 1130 1F6
700 1274 22G
800 1440 288
900 1604 2E0
1000 1750 31A

View this as a standalone, printable table

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