Encode congressional to Base64

Base64 result: Y29uZ3Jlc3Npb25hbA==

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

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Encoding Process: congressional to Y29uZ3Jlc3Npb25hbA==

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
o	01101111
n	01101110
g	01100111
r	01110010
e	01100101
s	01110011
s	01110011
i	01101001
o	01101111
n	01101110
a	01100001
l	01101100

Step 2: Group Bits into 6-bit Chunks

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

011000 110110 111101 101110 011001 110111 001001 100101 011100 110111 001101 101001 011011 110110 111001 100001 011011 00

Step 3: Convert Binary to Base64

Binary Value	Base64 Character
011000	Y
110110	2
111101	9
101110	u
011001	Z
110111	3
001001	J
100101	l
011100	c
110111	3
001101	N
101001	p
011011	b
110110	2
111001	5
100001	h
011011	b
00	A

When combined, these characters form the encoded string: "Y29uZ3Jlc3Npb25hbA=="

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