Base64

Base64 Encoder & Decoder

Base64 is an encoding scheme that converts binary data into a set of 64 printable characters, making it safe to transmit over systems that can only handle text. It is commonly used in email (MIME) and other protocols that support only 7-bit data.

    The input data is split into 6-bit chunks. If the final group has fewer than 6 bits, zeros are added to complete it.
    Each 6-bit group is mapped to a character using a Base64 table. If the final output has fewer than 4 characters, = symbols are added as padding.

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    • Conversion Table

    Decimal Binary Character Decimal Binary Character Decimal Binary Character Decimal Binary Character
    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 /