Encode autonomous to Base64

Base64 result: YXV0b25vbW91cw==

Encode text to Base64 format

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: autonomous to YXV0b25vbW91cw==

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
u	01110101
t	01110100
o	01101111
n	01101110
o	01101111
m	01101101
o	01101111
u	01110101
s	01110011

Step 2: Group Bits into 6-bit Chunks

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

011000 010111 010101 110100 011011 110110 111001 101111 011011 010110 111101 110101 011100 11

Step 3: Convert Binary to Base64

Binary Value	Base64 Character
011000	Y
010111	X
010101	V
110100	0
011011	b
110110	2
111001	5
101111	v
011011	b
010110	W
111101	9
110101	1
011100	c
11	w

When combined, these characters form the encoded string: "YXV0b25vbW91cw=="

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