Free Base64 Encoder and Decoder Online
Use this free Base64 encoder and decoder to convert text to and from Base64. Fast, private, UTF-8 safe, and works in your browser.
What is Base64 Encoder/Decoder?
Base64 Encoder/Decoder converts text to Base64 and back. It correctly handles UTF-8 characters, including Korean and emoji, so encoded values decode back exactly as you typed them.
How to use this tool
- Choose Encode or Decode.
- Paste or type your text.
- View the converted result instantly.
- Copy the output.
Features
- Encode text to Base64
- Decode Base64 back to text
- Full UTF-8 support (no broken characters)
- Clear error messages for invalid input
- Copy the result with one click
This tool runs in your browser. Your files and text are not uploaded to our servers, and we do not store your input.
Frequently asked questions
Does it handle non-English characters?+
Yes. The tool uses UTF-8 encoding, so Korean, accented letters, and emoji are handled correctly.
What if the Base64 is invalid when decoding?+
You will see an error message instead of garbled text, so you know the input needs fixing.
Is my text uploaded anywhere?+
No. Encoding and decoding happen entirely in your browser.
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