Base64 Encoder Decoder

Encode Unicode text to Base64 or decode Base64 into UTF-8 text.

ModeInput

How base64 encoder decoder works

UTF-8 bytes are represented as Base64 characters; decoding reconstructs the UTF-8 text.

Enter your values or text in the tool form.
Review the result as you change the inputs, or select the action button for code tools.
Copy the result or download it where a download option is available.

The word 'Hello' encodes to SGVsbG8=.

Base64 is an encoding, not encryption. Invalid Base64 and non-UTF-8 binary data produce errors.

How does base64 encoder decoder work?

UTF-8 bytes are represented as Base64 characters; decoding reconstructs the UTF-8 text.

What should I check before using the result?

Base64 is an encoding, not encryption. Invalid Base64 and non-UTF-8 binary data produce errors.

Is Base64 Encoder Decoder free to use?

Yes. Base64 Encoder Decoder is free, browser-based, and does not require signup.

Does this tool save my data?

Tool inputs are processed on your device. File tools do not upload your files. Website analytics are described in the privacy policy.

Can I use it on mobile?

Yes. The page is responsive and works on modern mobile, tablet, and desktop browsers.

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Reviewed 2026-10-24. By Mahad and Mehdi Developers.