Base64 encoding is a conversion, that convert of bytes into ASCII characters. In mathematics, the base of a number system refers to how many different characters represent numbers. The name of this encoding comes directly from the mathematical definition of bases - we have 64 characters that represent numbers.
The Base64 uses following charactes:0 26 uppercase letters (A-Z)Index | Binary | Char | Index | Binary | Char | Index | Binary | Char | Index | Binary | Char | |||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0 | 000000 | A |
16 | 010000 | Q |
32 | 100000 | g |
48 | 110000 | w
| |||
1 | 000001 | B |
17 | 010001 | R |
33 | 100001 | h |
49 | 110001 | x
| |||
2 | 000010 | C |
18 | 010010 | S |
34 | 100010 | i |
50 | 110010 | y
| |||
3 | 000011 | D |
19 | 010011 | T |
35 | 100011 | j |
51 | 110011 | z
| |||
4 | 000100 | E |
20 | 010100 | U |
36 | 100100 | k |
52 | 110100 | 0
| |||
5 | 000101 | F |
21 | 010101 | V |
37 | 100101 | l |
53 | 110101 | 1
| |||
6 | 000110 | G |
22 | 010110 | W |
38 | 100110 | m |
54 | 110110 | 2
| |||
7 | 000111 | H |
23 | 010111 | X |
39 | 100111 | n |
55 | 110111 | 3
| |||
8 | 001000 | I |
24 | 011000 | Y |
40 | 101000 | o |
56 | 111000 | 4
| |||
9 | 001001 | J |
25 | 011001 | Z |
41 | 101001 | p |
57 | 111001 | 5
| |||
10 | 001010 | K |
26 | 011010 | a |
42 | 101010 | q |
58 | 111010 | 6
| |||
11 | 001011 | L |
27 | 011011 | b |
43 | 101011 | r |
59 | 111011 | 7
| |||
12 | 001100 | M |
28 | 011100 | c |
44 | 101100 | s |
60 | 111100 | 8
| |||
13 | 001101 | N |
29 | 011101 | d |
45 | 101101 | t |
61 | 111101 | 9
| |||
14 | 001110 | O |
30 | 011110 | e |
46 | 101110 | u |
62 | 111110 | +
| |||
15 | 001111 | P |
31 | 011111 | f |
47 | 101111 | v |
63 | 111111 | /
|