Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 back to plain text. Handles UTF-8 input.
Result
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How It Works
Type or paste your text (or a Base64 string) into the input. The tool instantly encodes plain text to Base64 using the standard RFC 4648 alphabet, or decodes a Base64 string back to its original UTF-8 text. The conversion runs entirely in your browser with no round-trip to a server.
Use Cases
- Encoding binary data for embedding in JSON or XML payloads
- Decoding JWT header and payload segments
- Preparing data-URI strings for HTML or CSS
- Inspecting Base64-encoded email attachments