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Base64 Decoder Online | Shining Toolbox

Decode Base64 strings to original text. Convert Base64 encoded data back to readable format.

Quick Answer

Base64 decoding reverses the encoding process. Common uses: decoding email attachments, image data URLs, and API tokens.

Quick Template

Use the full Base64 Encoder/Decoder

This variant is a fast preset. Open the full tool to fine-tune inputs, explore more options, and share the result.

Go to Base64 Encoder/Decoder

About Base64 Decoder Online

How to Use Base64 Converter

  1. Enter text to encode or Base64 string to decode
  2. Click ‘Encode’ or ‘Decode’ button
  3. Copy the result with one click
  4. Works entirely in your browser

Base64 Alphabet

The Base64 alphabet uses 64 characters:

  • A-Z (26 characters)
  • a-z (26 characters)
  • 0-9 (10 characters)
    • and / (2 characters)
  • = (padding character)

Example

Text: Hello World Base64: SGVsbG8gV29ybGQ=

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