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Base 17 to Base 21

Base 17 to Base 21 Converter

Enter a number in base 17 below to convert it to base 21 instantly.

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About These Bases

Base 17

In base 17, each digit position represents a power of 17: the rightmost digit counts individual ones, the next counts groups of 17, the next counts groups of 17×17, and so on — the same place-value idea as base 10, just with 17 distinct digits instead of ten.

Base 21

Base 21 works the same way: the rightmost digit counts ones, the next counts groups of 21, the next counts groups of 21×21, and so on, using 21 distinct digits.

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Quick Reference Table
Base 10 Base 17 Base 21
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 10 H
18 11 I
19 12 J
20 13 K
21 14 10
22 15 11
23 16 12
24 17 13
25 18 14
26 19 15
27 1A 16
28 1B 17
29 1C 18
30 1D 19
31 1E 1A
32 1F 1B
33 1G 1C
34 20 1D
35 21 1E
36 22 1F
37 23 1G
38 24 1H
39 25 1I
40 26 1J
41 27 1K
42 28 20
43 29 21
44 2A 22
45 2B 23
46 2C 24
47 2D 25
48 2E 26
49 2F 27
50 2G 28
51 30 29
52 31 2A
53 32 2B
54 33 2C
55 34 2D
56 35 2E
57 36 2F
58 37 2G
59 38 2H
60 39 2I
61 3A 2J
62 3B 2K
63 3C 30
64 3D 31
70 42 37
80 4C 3H
90 55 46
100 5F 4G
200 BD 9B
300 10B E6
400 169 J1
500 1C7 12H
600 215 17C
700 273 1C7
800 2D1 1H2
900 31G 20I
1000 37E 25D

View this as a standalone, printable table

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