RFC 4648 Base64 Table

Official Base64 encoding table as defined in RFC 4648 is available here: RFC 4648 .

It is possible to use this table to manually encode or decode Base64 strings and to better understand the examples provided in the documentation of Base64 Encoder and Base64 Decoder.

Base64 Table 1/4
Index ASCII
0 A
1 B
2 C
3 D
4 E
5 F
6 G
7 H
8 I
9 J
10 K
11 L
12 M
13 N
14 O
15 P
Base64 Table 2/4
Index ASCII
16 Q
17 R
18 S
19 T
20 U
21 V
22 W
23 X
24 Y
25 Z
26 a
27 b
28 c
29 d
30 e
31 f
Base64 Table 3/4
Index ASCII
32 g
33 h
34 i
35 j
36 k
37 l
38 m
39 n
40 o
41 p
42 q
43 r
44 s
45 t
46 u
47 v
Base64 Table 4/4
Index ASCII
48 w
49 x
50 y
51 z
52 0
53 1
54 2
55 3
56 4
57 5
58 6
59 7
60 8
61 9
62 +
63 /