Encode collections to Base64

Base64 result: Y29sbGVjdGlvbnM=

Encode text to Base64 format

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

Destination newline separator

Process each line as a separate Base64 string

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Split lines into chunks

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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: collections to Y29sbGVjdGlvbnM=

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
o	01101111
l	01101100
l	01101100
e	01100101
c	01100011
t	01110100
i	01101001
o	01101111
n	01101110
s	01110011

Step 2: Group Bits into 6-bit Chunks

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

011000 110110 111101 101100 011011 000110 010101 100011 011101 000110 100101 101111 011011 100111 0011

Step 3: Convert Binary to Base64

Binary Value	Base64 Character
011000	Y
110110	2
111101	9
101100	s
011011	b
000110	G
010101	V
100011	j
011101	d
000110	G
100101	l
101111	v
011011	b
100111	n
0011	M

When combined, these characters form the encoded string: "Y29sbGVjdGlvbnM="

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