Base64 Encode / Decode — Free Online Tool

Encode Unicode text as Base64 or decode a Base64 payload back into readable text directly in the browser.

This private tool runs locally in your browser. Your text is never uploaded or sent to a server.

How to use Base64 Encode / Decode

Choose encode or decode
Paste the input
Copy the converted output

Example

Encoding “hello” produces “aGVsbG8=”.

Useful tips

Base64 is encoding, not encryption
Invalid or incomplete Base64 cannot be decoded reliably

JavaScript enables the interactive tool above.

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