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Base 23 to Base 21

Base 23 to Base 21 Converter

Enter a number in base 23 below to convert it to base 21 instantly.

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About These Bases

Base 23

In base 23, each digit position represents a power of 23: the rightmost digit counts individual ones, the next counts groups of 23, the next counts groups of 23×23, and so on — the same place-value idea as base 10, just with 23 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 23 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 M 11
23 10 12
24 11 13
25 12 14
26 13 15
27 14 16
28 15 17
29 16 18
30 17 19
31 18 1A
32 19 1B
33 1A 1C
34 1B 1D
35 1C 1E
36 1D 1F
37 1E 1G
38 1F 1H
39 1G 1I
40 1H 1J
41 1I 1K
42 1J 20
43 1K 21
44 1L 22
45 1M 23
46 20 24
47 21 25
48 22 26
49 23 27
50 24 28
51 25 29
52 26 2A
53 27 2B
54 28 2C
55 29 2D
56 2A 2E
57 2B 2F
58 2C 2G
59 2D 2H
60 2E 2I
61 2F 2J
62 2G 2K
63 2H 30
64 2I 31
70 31 37
80 3B 3H
90 3L 46
100 48 4G
200 8G 9B
300 D1 E6
400 H9 J1
500 LH 12H
600 132 17C
700 17A 1C7
800 1BI 1H2
900 1G3 20I
1000 1KB 25D

View this as a standalone, printable table

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