Base64 encode / decode
Convert text to Base64 and back, with full Unicode support.
Input
Output
Runs locally in your browser. Nothing is uploaded.
How to use
- Paste text or a Base64 string.
- Choose Encode or Decode.
- Copy the result.
Questions
Does it handle emoji and Cyrillic?
Yes, text is encoded as UTF-8 before Base64, which is what most systems expect.