Encode cats to Base64

Base64 result: Y2F0cw==

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

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Base64 Encoded Result

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Encoding Process: cats to Y2F0cw==

About the '=' Padding

Base64 encoding requires the input length (in bytes) to be divisible by 3. If it's not, padding is added: Two '=' characters are added when the input length modulo 3 equals 1. This happens because the input length leaves a remainder of 1 when divided by 3, indicating that two more bytes are needed to complete the 3-byte group. This ensures the encoded output is properly aligned.

Step 1: Map ASCII Characters to Binary

ASCII Character	Binary Value
c	01100011
a	01100001
t	01110100
s	01110011

Step 2: Group Bits into 6-bit Chunks

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

011000 110110 000101 110100 011100 11

Step 3: Convert Binary to Base64

Binary Value	Base64 Character
011000	Y
110110	2
000101	F
110100	0
011100	c
11	w

When combined, these characters form the encoded string: "Y2F0cw=="

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