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Base 9 to Base 11

Base 9 to Base 11 Converter

Enter a number in base 9 below to convert it to base 11 instantly.

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About These Bases

Base 9

In base 9, each digit position represents a power of 9: the rightmost digit counts individual ones, the next counts groups of 9, the next counts groups of 9×9, and so on — the same place-value idea as base 10, just with 9 distinct digits instead of ten.

Base 11

Base 11 works the same way: the rightmost digit counts ones, the next counts groups of 11, the next counts groups of 11×11, and so on, using 11 distinct digits.

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Quick Reference Table
Base 10 Base 9 Base 11
1 1 1
2 2 2
3 3 3
4 4 4
5 5 5
6 6 6
7 7 7
8 8 8
9 10 9
10 11 A
11 12 10
12 13 11
13 14 12
14 15 13
15 16 14
16 17 15
17 18 16
18 20 17
19 21 18
20 22 19
21 23 1A
22 24 20
23 25 21
24 26 22
25 27 23
26 28 24
27 30 25
28 31 26
29 32 27
30 33 28
31 34 29
32 35 2A
33 36 30
34 37 31
35 38 32
36 40 33
37 41 34
38 42 35
39 43 36
40 44 37
41 45 38
42 46 39
43 47 3A
44 48 40
45 50 41
46 51 42
47 52 43
48 53 44
49 54 45
50 55 46
51 56 47
52 57 48
53 58 49
54 60 4A
55 61 50
56 62 51
57 63 52
58 64 53
59 65 54
60 66 55
61 67 56
62 68 57
63 70 58
64 71 59
70 77 64
80 88 73
90 110 82
100 121 91
200 242 172
300 363 253
400 484 334
500 615 415
600 736 4A6
700 857 587
800 1078 668
900 1210 749
1000 1331 82A

View this as a standalone, printable table

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