Encode actually to Base64

Base64 result: YWN0dWFsbHk=

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: actually to YWN0dWFsbHk=

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
a	01100001
c	01100011
t	01110100
u	01110101
a	01100001
l	01101100
l	01101100
y	01111001

Step 2: Group Bits into 6-bit Chunks

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

011000 010110 001101 110100 011101 010110 000101 101100 011011 000111 1001

Step 3: Convert Binary to Base64

Binary Value	Base64 Character
011000	Y
010110	W
001101	N
110100	0
011101	d
010110	W
000101	F
101100	s
011011	b
000111	H
1001	k

When combined, these characters form the encoded string: "YWN0dWFsbHk="

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