Base64 Encoder / Decoder

Base64 Encoding

Base64 encoding is a method of converting binary data into a text format to maintain data integrity while transmitting. Base64 encoding uses 64 characters (A-Z, a-z, 0-9, +, /) to encode binary data into text.

1. Input data is first divided into 8-bit bytes.

2. These bytes are then grouped into 6-bit blocks. Each 6-bit block is converted to a character in the Base64 character set.

3. The resulting Base64 string is padded with '=' characters if necessary to make the length a multiple of 4.

Base64 Decoding

Base64 decoding is the process of converting a Base64-encoded string back into its original binary data to restore the original information.

1. Remove '=' characters from the end of the Base64 string.

2. Convert each Base64 character to its corresponding 6-bit value.

3. Reconstruct the 8-bit bytes from these 6-bit values to restore the original binary data.

How to Use

1. Text Input: Enter the string you want to encode in Base64 or the Base64 string you want to decode in the text input area.

2. Encode / Decode: Click the 'Encode to Base64' / 'Decode to String' button to encode the string into Base64 or decode the Base64 string.

3. Check Results: The converted result will be displayed in the output area.

4. Copy Result: Click the copy button next to the output area to copy the result to your clipboard.

Security

All text entered and information related to encoding / decoding are not stored on the server.

Free to Use

This tool is provided completely free of charge. There is no need to download additional software; it can be used directly from the web.

Encoding Example

For example, the string 'Hello World' is converted to an ASCII byte sequence and then encoded in Base64, resulting in: SGVsbG8gV29ybGQ=.