Math Tools Math Tools

Base 21 to Base 26

Base 21 to Base 26 Converter

Enter a number in base 21 below to convert it to base 26 instantly.

Advertisement

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 26

Base 26 works the same way: the rightmost digit counts ones, the next counts groups of 26, the next counts groups of 26×26, and so on, using 26 distinct digits.

Advertisement

Quick Reference Table
Base 10 Base 21 Base 26
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 P
26 15 10
27 16 11
28 17 12
29 18 13
30 19 14
31 1A 15
32 1B 16
33 1C 17
34 1D 18
35 1E 19
36 1F 1A
37 1G 1B
38 1H 1C
39 1I 1D
40 1J 1E
41 1K 1F
42 20 1G
43 21 1H
44 22 1I
45 23 1J
46 24 1K
47 25 1L
48 26 1M
49 27 1N
50 28 1O
51 29 1P
52 2A 20
53 2B 21
54 2C 22
55 2D 23
56 2E 24
57 2F 25
58 2G 26
59 2H 27
60 2I 28
61 2J 29
62 2K 2A
63 30 2B
64 31 2C
70 37 2I
80 3H 32
90 46 3C
100 4G 3M
200 9B 7I
300 E6 BE
400 J1 FA
500 12H J6
600 17C N2
700 1C7 10O
800 1H2 14K
900 20I 18G
1000 25D 1CC

View this as a standalone, printable table

Related Base Conversion Calculators

Related pages

Advertisement