Base64 decoder

Decode Base64 Strings Instantly

Use this free online Base64 Decoder to convert Base64 encoded text back into readable plain text instantly. Ideal for developers, students, cybersecurity professionals, and anyone working with encoded data.

What is Base64 Decoding?

Base64 decoding is the process of converting Base64 encoded data back into its original readable format. Base64 is commonly used to encode binary data, transmit data via APIs, embed images in HTML/CSS, and store structured information safely in text-based systems.

How to Use This Tool

  • Paste your Base64 encoded string into the input box.
  • Click the decode button.
  • Instantly view the decoded plain text result.
  • Use the copy button to copy the decoded output.

Common Uses of Base64 Decoding

  • Decode API tokens and payloads
  • Read encoded JSON/Web Tokens
  • Debug encoded application data
  • Reverse Base64 encoded text from software systems