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Base 40 to Base 9

Base 40 to Base 9 Converter

Enter a number in base 40 below to convert it to base 9 instantly.

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About These Bases

Base 40

In base 40, each digit position represents a power of 40: the rightmost digit counts individual ones, the next counts groups of 40, the next counts groups of 40×40, and so on — the same place-value idea as base 10, just with 40 distinct digits instead of ten.

Base 9

Base 9 works the same way: the rightmost digit counts ones, the next counts groups of 9, the next counts groups of 9×9, and so on, using 9 distinct digits.

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Quick Reference Table
Base 10 Base 40 Base 9
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 9 10
10 A 11
11 B 12
12 C 13
13 D 14
14 E 15
15 F 16
16 G 17
17 H 18
18 I 20
19 J 21
20 K 22
21 L 23
22 M 24
23 N 25
24 O 26
25 P 27
26 Q 28
27 R 30
28 S 31
29 T 32
30 U 33
31 V 34
32 W 35
33 X 36
34 Y 37
35 Z 38
36 a 40
37 b 41
38 c 42
39 d 43
40 10 44
41 11 45
42 12 46
43 13 47
44 14 48
45 15 50
46 16 51
47 17 52
48 18 53
49 19 54
50 1A 55
51 1B 56
52 1C 57
53 1D 58
54 1E 60
55 1F 61
56 1G 62
57 1H 63
58 1I 64
59 1J 65
60 1K 66
61 1L 67
62 1M 68
63 1N 70
64 1O 71
70 1U 77
80 20 88
90 2A 110
100 2K 121
200 50 242
300 7K 363
400 A0 484
500 CK 615
600 F0 736
700 HK 857
800 K0 1078
900 MK 1210
1000 P0 1331

View this as a standalone, printable table

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