Base64 Decoder

Easily convert Base64 encoded data back into its original text format. All processing is done securely in your browser.

How to use this tool

  1. 1Paste Base64Input your Base64 encoded string into the text area.
  2. 2Select DecodeEnsure the tool is set to decode mode.
  3. 3Read TextThe original plain text will instantly appear for you to copy.

What this tool is useful for

  • Decoding hidden messages or encoded URLs.
  • Extracting plain text from email headers.
  • Debugging encoded API responses.

Privacy & processing

All processing is executed locally using your browser. Your data is never sent to a server.