Base64 Decoder

Base64 decoder helps you decode Base64 encoded strings back into readable text or original data. This free online tool is useful for developers who work with encoded data in APIs, authentication tokens, or data transmission. Paste your Base64 input, and the decoder will instantly produce the decoded output.

Input Base64
Text Output

1 How to use this tool

  1. Paste your Base64 string into the Input Base64 editor.
  2. Or click Upload File to decode a file's content.
  3. The tool will automatically decode and display the result.
  4. Copy the decoded text or data.

2 Example

Input Base64

1 
SGVsbG8gV29ybGQhClRoaXMgaXMgYSB0ZXN0IGZvciBCYXNlNjQgRGVjb2Rlci4=

Decoded Text

1
2 
Hello World!
This is a test for Base64 Decoder.

3 Benefits of using this tool

Instant Decoding

Quickly revert Base64 strings to readable formats without using command-line tools.

UTF-8 Support

Processes multi-byte characters correctly, ensuring international text is decoded accurately.

4 Privacy and Security

This tool operates entirely in your browser. Your data is processed locally using JavaScript and is never sent to any external server. You can safely use this tool with sensitive information.

Related Tools

Need to encode Base64? Use our Base64 Encoder.

Working with images? Try our Image to Base64 converter.

Need to convert Base64 to an image? Check out the Base64 to Image converter.

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