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Base 22 to Base 21

Base 22 to Base 21 Converter

Enter a number in base 22 below to convert it to base 21 instantly.

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About These Bases

Base 22

In base 22, each digit position represents a power of 22: the rightmost digit counts individual ones, the next counts groups of 22, the next counts groups of 22×22, and so on — the same place-value idea as base 10, just with 22 distinct digits instead of ten.

Base 21

Base 21 works the same way: the rightmost digit counts ones, the next counts groups of 21, the next counts groups of 21×21, and so on, using 21 distinct digits.

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Quick Reference Table
Base 10 Base 22 Base 21
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 10
22 10 11
23 11 12
24 12 13
25 13 14
26 14 15
27 15 16
28 16 17
29 17 18
30 18 19
31 19 1A
32 1A 1B
33 1B 1C
34 1C 1D
35 1D 1E
36 1E 1F
37 1F 1G
38 1G 1H
39 1H 1I
40 1I 1J
41 1J 1K
42 1K 20
43 1L 21
44 20 22
45 21 23
46 22 24
47 23 25
48 24 26
49 25 27
50 26 28
51 27 29
52 28 2A
53 29 2B
54 2A 2C
55 2B 2D
56 2C 2E
57 2D 2F
58 2E 2G
59 2F 2H
60 2G 2I
61 2H 2J
62 2I 2K
63 2J 30
64 2K 31
70 34 37
80 3E 3H
90 42 46
100 4C 4G
200 92 9B
300 DE E6
400 I4 J1
500 10G 12H
600 156 17C
700 19I 1C7
800 1E8 1H2
900 1IK 20I
1000 21A 25D

View this as a standalone, printable table

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