Encode annotation to Base64

Base64 result: YW5ub3RhdGlvbg==

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

Do not store in history

Split lines into chunks

Live mode

Encode base64 strings in real-time as you type or paste.

Base64 Encoded Result

Encode file to Base64 format

Charset:

Click to upload or drag and drop

Encoding Process: annotation to YW5ub3RhdGlvbg==

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
n	01101110
n	01101110
o	01101111
t	01110100
a	01100001
t	01110100
i	01101001
o	01101111
n	01101110

Step 2: Group Bits into 6-bit Chunks

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

011000 010110 111001 101110 011011 110111 010001 100001 011101 000110 100101 101111 011011 10

Step 3: Convert Binary to Base64

Binary Value	Base64 Character
011000	Y
010110	W
111001	5
101110	u
011011	b
110111	3
010001	R
100001	h
011101	d
000110	G
100101	l
101111	v
011011	b
10	g

When combined, these characters form the encoded string: "YW5ub3RhdGlvbg=="

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