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Encode and Decode Base64
Convert text to standard Base64 or decode Base64 back into UTF-8 text. Everything runs in your browser, including Unicode input and error handling.
UTF-8 encoding and decoding happen locally in your browser.
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What you can do with this tool
- Encode Unicode text using UTF-8 before Base64 conversion.
- Decode standard Base64 and report malformed or non-UTF-8 input clearly.
- Copy or download results without sending text to a server.
How to use Base64 Encoder and Decoder
- Choose Encode or Decode.
- Paste or type text, then run the selected operation.
- Copy the result or download it as a text file.
When this tool is useful
- Inspect a Base64 value embedded in a configuration or data sample.
- Encode UTF-8 text for a system that expects Base64 text.
Limits and privacy
Base64 is a reversible encoding, not encryption or access control. Do not treat encoded sensitive information as protected. This tool handles text as UTF-8 in your browser; it is not a binary-file encoder.
Frequently asked questions
Does Base64 protect or encrypt text?
No. Base64 is an encoding, not encryption. Anyone can decode it.
Does it support Unicode?
Yes. Text is encoded and decoded as UTF-8.
Is the input sent to a server?
No. Encoding and decoding happen locally in your browser.