Base64 Encode & Decode Text Online
Instantly convert plain text to Base64 encoding and decode Base64 strings back to readable text. Our free online Base64 converter handles UTF-8 characters perfectly, making it ideal for developers working with APIs, authentication, and data transmission.
Encode and decode text strings to/from Base64 format.
How Base64 Encoding Works: Base64 converts binary data into a set of 64 ASCII characters (A-Z, a-z, 0-9, +, /), making it safe to transmit through text-only channels. Each 3 bytes of input data are converted into 4 Base64 characters, with padding characters (=) added when needed to maintain proper length alignment.
Common uses: UTF-8 support, URL-safe encoding, line wrapping options.
Privacy & Security: All Base64 encoding and decoding operations are performed entirely in your browser using JavaScript. No data is transmitted to external servers, ensuring your sensitive information remains private and secure. Note that Base64 is an encoding method, not encryption - encoded data can be easily decoded by anyone.