aAllgoTool FREE TO USE

Web utilities

Base64 Encoder and Decoder

Convert Unicode text to and from Base64.

Enable JavaScript to enter your values and use this tool. The guide below is available without JavaScript.

How to use the base64 encoder and decoder

  1. Enter the values or text requested by the tool.
  2. Choose the available options and run the tool.
  3. Review the result.

Worked example

“Hello” encodes to “SGVsbG8=”. Decoding returns the original UTF-8 text.

Understanding the result

Encoding works with Unicode text. Decoding expects valid Base64 representing UTF-8 text; this is not a binary file converter. Base64 is not encryption.

Frequently asked questions

Does Base64 protect sensitive information?

No. It is an easily reversible representation, not encryption or access control.

Is this Base64 encoder free to use?

Yes. This version of AllgoTool is free to use and does not require an account. The tool’s limits are explained above.

Supported inputs and limitations

Check your input and review the result. The tool processes data locally and may have different behaviour from specialised software.

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