Encode customizing to Base64

Base64 result: Y3VzdG9taXppbmc=

Encode text to Base64 format

For encoded binaries (like images, documents, etc.) use the file upload form below.

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Process each line as a separate Base64 string

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Encode base64 strings in real-time as you type or paste.

Base64 Encoded Result

Encode file to Base64 format

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Encoding Process: customizing to Y3VzdG9taXppbmc=

About the '=' Padding

Base64 encoding requires the input length (in bytes) to be divisible by 3. If it's not, padding is added: One '=' character is added when the input length modulo 3 equals 2. This ensures the encoded output is properly aligned.

Step 1: Map ASCII Characters to Binary

ASCII Character	Binary Value
c	01100011
u	01110101
s	01110011
t	01110100
o	01101111
m	01101101
i	01101001
z	01111010
i	01101001
n	01101110
g	01100111

Step 2: Group Bits into 6-bit Chunks

The binary string is grouped into 6-bit chunks for Base64 encoding:

011000 110111 010101 110011 011101 000110 111101 101101 011010 010111 101001 101001 011011 100110 0111

Step 3: Convert Binary to Base64

Binary Value	Base64 Character
011000	Y
110111	3
010101	V
110011	z
011101	d
000110	G
111101	9
101101	t
011010	a
010111	X
101001	p
101001	p
011011	b
100110	m
0111	c

When combined, these characters form the encoded string: "Y3VzdG9taXppbmc="

Related Conversion Tools

Base64 Decode

About the '=' Padding

Step 1: Map ASCII Characters to Binary

Step 2: Group Bits into 6-bit Chunks

Step 3: Convert Binary to Base64

More Base64 encodings