Base64 Decoder

Decode Base64 back to text.

Input (plain text)

Base64 Result

What Is a Base64 Decoder?

The Base64 Decoder converts Base64-encoded text back into its original plain text. This is the inverse operation of Base64 encoding and is commonly used to inspect email MIME parts, decode JWT segments, and recover data embedded in text protocols.

How to Use This Base64 Decoder

1
Choose DecodeSelect the Decode tab.
2
Paste Base64Paste the Base64 string you want to decode.
3
Copy ResultThe decoded text appears instantly; click copy to save it.

Frequently Asked Questions

Common causes are whitespace, a missing/incorrect number of '=' padding characters, or characters outside the Base64 alphabet (+, /, alphanumerics). Removing line breaks usually fixes it.

Yes. This tool decodes UTF-8, so emoji and non-Latin scripts are recovered correctly as long as the data was encoded as UTF-8.

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