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Base 21 to Base 25

Base 21 to Base 25 Converter

Enter a number in base 21 below to convert it to base 25 instantly.

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About These Bases

Base 21

In base 21, each digit position represents a power of 21: the rightmost digit counts individual ones, the next counts groups of 21, the next counts groups of 21×21, and so on — the same place-value idea as base 10, just with 21 distinct digits instead of ten.

Base 25

Base 25 works the same way: the rightmost digit counts ones, the next counts groups of 25, the next counts groups of 25×25, and so on, using 25 distinct digits.

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Quick Reference Table
Base 10 Base 21 Base 25
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 10 L
22 11 M
23 12 N
24 13 O
25 14 10
26 15 11
27 16 12
28 17 13
29 18 14
30 19 15
31 1A 16
32 1B 17
33 1C 18
34 1D 19
35 1E 1A
36 1F 1B
37 1G 1C
38 1H 1D
39 1I 1E
40 1J 1F
41 1K 1G
42 20 1H
43 21 1I
44 22 1J
45 23 1K
46 24 1L
47 25 1M
48 26 1N
49 27 1O
50 28 20
51 29 21
52 2A 22
53 2B 23
54 2C 24
55 2D 25
56 2E 26
57 2F 27
58 2G 28
59 2H 29
60 2I 2A
61 2J 2B
62 2K 2C
63 30 2D
64 31 2E
70 37 2K
80 3H 35
90 46 3F
100 4G 40
200 9B 80
300 E6 C0
400 J1 G0
500 12H K0
600 17C O0
700 1C7 130
800 1H2 170
900 20I 1B0
1000 25D 1F0

View this as a standalone, printable table

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