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Base64 Encoder Decoder

Encode text to Base64 and decode Base64 back to text in your browser. Full Unicode support.

How to use

  1. Paste text or a Base64 string.
  2. Switch between Encode and Decode modes.
  3. Click Copy to copy the result.

About this tool

Base64 Encoder Decoder converts between text and Base64. Encoding goes through UTF-8, so emoji and other multi-byte characters round-trip correctly. Errors are surfaced when the input is not valid Base64.

Free to use. Works in your browser. No signup, no login.

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