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Base 40 to Base 42

Base 40 to Base 42 Converter

Enter a number in base 40 below to convert it to base 42 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 42

Base 42 works the same way: the rightmost digit counts ones, the next counts groups of 42, the next counts groups of 42×42, and so on, using 42 distinct digits.

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Quick Reference Table
Base 10 Base 40 Base 42
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 9
10 A A
11 B B
12 C C
13 D D
14 E E
15 F F
16 G G
17 H H
18 I I
19 J J
20 K K
21 L L
22 M M
23 N N
24 O O
25 P P
26 Q Q
27 R R
28 S S
29 T T
30 U U
31 V V
32 W W
33 X X
34 Y Y
35 Z Z
36 a a
37 b b
38 c c
39 d d
40 10 e
41 11 f
42 12 10
43 13 11
44 14 12
45 15 13
46 16 14
47 17 15
48 18 16
49 19 17
50 1A 18
51 1B 19
52 1C 1A
53 1D 1B
54 1E 1C
55 1F 1D
56 1G 1E
57 1H 1F
58 1I 1G
59 1J 1H
60 1K 1I
61 1L 1J
62 1M 1K
63 1N 1L
64 1O 1M
70 1U 1S
80 20 1c
90 2A 26
100 2K 2G
200 50 4W
300 7K 76
400 A0 9M
500 CK Bc
600 F0 EC
700 HK GS
800 K0 J2
900 MK LI
1000 P0 NY

View this as a standalone, printable table

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