Encode abba to Base64

Base64 result: YWJiYQ==

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: abba to YWJiYQ==

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
a	01100001
b	01100010
b	01100010
a	01100001

Step 2: Group Bits into 6-bit Chunks

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

011000 010110 001001 100010 011000 01

Step 3: Convert Binary to Base64

Binary Value	Base64 Character
011000	Y
010110	W
001001	J
100010	i
011000	Y
01	Q

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

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