Base64 encoder / decoder

Convert UTF-8 text to and from standard Base64.

Text stays in this browser.

Direction

Standard Base64 with padding. Text is UTF-8 encoded before conversion. Decoding requires the result to be valid UTF-8 text; binary data is not supported.

How to use

  1. Paste the text.
  2. Choose encode or decode.
  3. Convert and copy the result.

What it supports

Text only: Japanese and emoji round-trip correctly. Decoding rejects invalid Base64 input and results that are not valid UTF-8 text. Files are not supported.

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