Base 8 to Base 21 converter

Base 8 to Base 21 Converter

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Base 8 and Base 21

Base 8

In base 8, each digit in a number represents the number of copies of that power of 8. That is, the first digit tells you how many ones you have; the second tells you how many 8s you have; the third tells you how many 8x8 you have; the fourth tells you how many 8x8x8 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 8 to Base 21 Conversion Table

Base 8	Base 21
1	1
2	2
3	3
4	4
5	5
6	6
7	7
10	8
11	9
12	A
13	B
14	C
15	D
16	E
17	F
20	G
21	H
22	I
23	J
24	K
25	10
26	11
27	12
30	13
31	14
32	15
33	16
34	17
35	18
36	19
37	1A
40	1B
41	1C
42	1D
43	1E
44	1F
45	1G
46	1H
47	1I
50	1J
51	1K
52	20
53	21
54	22
55	23
56	24
57	25
60	26
61	27
62	28
63	29
64	2A
65	2B
66	2C
67	2D
70	2E
71	2F
72	2G
73	2H
74	2I
75	2J
76	2K
77	30
100	31

Base 21 to Base 8 Conversion Table

Base 21	Base 8
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	10
9	11
A	12
B	13
C	14
D	15
E	16
F	17
G	20
H	21
I	22
J	23
K	24
10	25
11	26
12	27
13	30
14	31
15	32
16	33
17	34
18	35
19	36
1A	37
1B	40
1C	41
1D	42
1E	43
1F	44
1G	45
1H	46
1I	47
1J	50
1K	51
20	52
21	53
22	54
23	55
24	56
25	57
26	60
27	61
28	62
29	63
2A	64
2B	65
2C	66
2D	67
2E	70
2F	71
2G	72
2H	73
2I	74
2J	75
2K	76
30	77
31	100

Base 8 to Base 21 Converter