Free Base64 Decode Tool

Base64 Decode Tool

Use this Base64 Decode tool to instantly convert Base64-encoded text into readable output in your browser. It works for plain text, UTF-8 content, and encoded payloads copied from APIs, logs, or configuration files.

Decoding runs fully client-side, so your data is not sent to any external server during conversion. Paste your Base64 value on the left and get decoded text output on the right.

Frequently Asked Questions

What is Base64 decoding?

Base64 decoding converts Base64 characters back to their original byte sequence or text content.

Why does decoding fail for some inputs?

Invalid characters, incorrect padding, or truncated data can produce decoding errors. Ensure your Base64 string is complete and properly formatted.

Can this decode Unicode text?

Yes. This tool decodes Base64 to UTF-8 text, so most international characters render correctly.

Is Base64 encryption?

No. Base64 is an encoding format, not encryption. Anyone can decode it without a secret key.