Encode/Decode Base64

Encode or decode text to Base64 format securely in your browser.

Input Text

Operation

Result

—

The Methodology

btoa() for encoding, atob() for decoding

This tool uses the verified professional formula shown above. We cite our sources so you can trust every result.

How it works

Base64 is a group of binary-to-text encoding schemes that represent binary data in an ASCII string format. It is commonly used when there is a need to encode binary data that needs to be stored and transferred over media that are designed to deal with text.

This tool uses the browser's native btoa and atob functions, wrapped with UTF-8 handling to ensure special characters don't break the encoding.