Encode illustrates to Base64

Base64 result: aWxsdXN0cmF0ZXM=

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: illustrates to aWxsdXN0cmF0ZXM=

About the '=' Padding

Base64 encoding requires the input length (in bytes) to be divisible by 3. If it's not, padding is added: One '=' character is added when the input length modulo 3 equals 2. This ensures the encoded output is properly aligned.

Step 1: Map ASCII Characters to Binary

ASCII Character	Binary Value
i	01101001
l	01101100
l	01101100
u	01110101
s	01110011
t	01110100
r	01110010
a	01100001
t	01110100
e	01100101
s	01110011

Step 2: Group Bits into 6-bit Chunks

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

011010 010110 110001 101100 011101 010111 001101 110100 011100 100110 000101 110100 011001 010111 0011

Step 3: Convert Binary to Base64

Binary Value	Base64 Character
011010	a
010110	W
110001	x
101100	s
011101	d
010111	X
001101	N
110100	0
011100	c
100110	m
000101	F
110100	0
011001	Z
010111	X
0011	M

When combined, these characters form the encoded string: "aWxsdXN0cmF0ZXM="

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