Base64 Encoder / Decoder

Encode plain text to Base64 or decode Base64 back to plain text.

Text (UTF-8):

Base64:

About the Base64 Encoder & Decoder

Base64 is a widely used encoding scheme that converts binary data (like images or files) or text data into a plain-text format that can be safely sent over systems that only support text. It's commonly seen in data URLs, email attachments, and basic web authentication.

Our simple, client-side tool allows you to perform both common operations instantly:

Encode: Converts your plain (UTF-8) text into its Base64 string representation.
Decode: Converts a valid Base64 string back into its original plain text.

This tool uses your browser's built-in `btoa()` and `atob()` functions, meaning all operations happen locally. Your data is never transmitted to a server, ensuring your work is fast, secure, and private. If you try to decode an invalid Base64 string, the tool will report an error.