Online Base64 Encode/Decode Text


What is Base64?

Base64 - encoding an array of bytes 64 using ASCII characters. The characters used are A-Z, a-z, 0-9, +, /. Every 3 bytes are encoded with 4 characters.

Encode text to Base64

The text is first converted to UTF8 encoding, then the bytes are encoded in Base64. Base64 text encoding is used in web applications to encode javascript and css files.

How is Base64 encoded

First, 3 characters (24 bits) are taken and divided by 4 numbers of 6 bits each. These numbers are indices for the string 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'. If less than 3 characters are used, the remaining characters are padded with '='.

Text encode examples

Hellow World = SGVsbG93IFdvcmxk
It was beautiful = SXQgd2FzIGJlYXV0aWZ1bA​​==