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Base 9 to Base 40

Base 9 to Base 40 Converter

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

Base 40 works the same way: the rightmost digit counts ones, the next counts groups of 40, the next counts groups of 40×40, and so on, using 40 distinct digits.

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

View this as a standalone, printable table

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