Encode metropolis to Base64

Base64 result: bWV0cm9wb2xpcw==

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: metropolis to bWV0cm9wb2xpcw==

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
m	01101101
e	01100101
t	01110100
r	01110010
o	01101111
p	01110000
o	01101111
l	01101100
i	01101001
s	01110011

Step 2: Group Bits into 6-bit Chunks

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

011011 010110 010101 110100 011100 100110 111101 110000 011011 110110 110001 101001 011100 11

Step 3: Convert Binary to Base64

Binary Value	Base64 Character
011011	b
010110	W
010101	V
110100	0
011100	c
100110	m
111101	9
110000	w
011011	b
110110	2
110001	x
101001	p
011100	c
11	w

When combined, these characters form the encoded string: "bWV0cm9wb2xpcw=="

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