Base 9 to Base 21 converter

Base 9 to Base 21 Converter

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Base 9 and Base 21

Base 9

In base 9, each digit in a number represents the number of copies of that power of 9. That is, the first digit tells you how many ones you have; the second tells you how many 9s you have; the third tells you how many 9x9 you have; the fourth tells you how many 9x9x9 you have; and so on.

Base 21

In base 21, each digit in a number represents the number of copies of that power of 21. That is, the first digit tells you how many ones you have; the second tells you how many 21s you have; the third tells you how many 21x21 you have; the fourth tells you how many 21x21x21 you have; and so on.

Conversion Table

Base 9 to Base 21 Conversion Table

Base 9	Base 21
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
10	9
11	A
12	B
13	C
14	D
15	E
16	F
17	G
18	H
20	I
21	J
22	K
23	10
24	11
25	12
26	13
27	14
28	15
30	16
31	17
32	18
33	19
34	1A
35	1B
36	1C
37	1D
38	1E
40	1F
41	1G
42	1H
43	1I
44	1J
45	1K
46	20
47	21
48	22
50	23
51	24
52	25
53	26
54	27
55	28
56	29
57	2A
58	2B
60	2C
61	2D
62	2E
63	2F
64	2G
65	2H
66	2I
67	2J
68	2K
70	30
71	31

Base 21 to Base 9 Conversion Table

Base 21	Base 9
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	10
A	11
B	12
C	13
D	14
E	15
F	16
G	17
H	18
I	20
J	21
K	22
10	23
11	24
12	25
13	26
14	27
15	28
16	30
17	31
18	32
19	33
1A	34
1B	35
1C	36
1D	37
1E	38
1F	40
1G	41
1H	42
1I	43
1J	44
1K	45
20	46
21	47
22	48
23	50
24	51
25	52
26	53
27	54
28	55
29	56
2A	57
2B	58
2C	60
2D	61
2E	62
2F	63
2G	64
2H	65
2I	66
2J	67
2K	68
30	70
31	71

Base 9 to Base 21 Converter