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Base 21 to Base 64

Base 21 to Base 64 Converter

Enter a number in base 21 below to convert it to base 64 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 64

Base 64 works the same way: the rightmost digit counts ones, the next counts groups of 64, the next counts groups of 64×64, and so on, using 64 distinct digits.

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Quick Reference Table
Base 10 Base 21 Base 64
1 1 B
2 2 C
3 3 D
4 4 E
5 5 F
6 6 G
7 7 H
8 8 I
9 9 J
10 A K
11 B L
12 C M
13 D N
14 E O
15 F P
16 G Q
17 H R
18 I S
19 J T
20 K U
21 10 V
22 11 W
23 12 X
24 13 Y
25 14 Z
26 15 a
27 16 b
28 17 c
29 18 d
30 19 e
31 1A f
32 1B g
33 1C h
34 1D i
35 1E j
36 1F k
37 1G l
38 1H m
39 1I n
40 1J o
41 1K p
42 20 q
43 21 r
44 22 s
45 23 t
46 24 u
47 25 v
48 26 w
49 27 x
50 28 y
51 29 z
52 2A 0
53 2B 1
54 2C 2
55 2D 3
56 2E 4
57 2F 5
58 2G 6
59 2H 7
60 2I 8
61 2J 9
62 2K +
63 30 /
64 31 BA
70 37 BG
80 3H BQ
90 46 Ba
100 4G Bk
200 9B DI
300 E6 Es
400 J1 GQ
500 12H H0
600 17C JY
700 1C7 K8
800 1H2 Mg
900 20I OE
1000 25D Po

View this as a standalone, printable table

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