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Encode text to Base64 or decode Base64 to text instantly. Secure, fast, and works fully offline in your browser.
The most advanced Base64 encoder and Base64 decoder online. Encode text to Base64 or decode Base64 strings instantly. Perfect for developers, data processing, and secure text transmission.
Base64 encoding converts binary data into ASCII characters using 64 different characters: A-Z, a-z, 0-9, +, and /. Each character represents 6 bits of data, with = used for padding.
Text is converted to binary, then grouped into 6-bit chunks. Each chunk is mapped to a Base64 character. The output is approximately 33% larger than the original input.
Encode/decode in milliseconds
No data leaves your browser
Handles all text characters
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