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Base64 Encoder/Decoder

Encode and decode Base64 strings instantly. Free online Base64 converter with text and file support.

Input Text

Base64 Output

Or encode a file:

Base64 Input

Decoded Text

Bidirectional

Encode plain text to Base64 or decode Base64 to text.

File Support

Encode files directly to Base64 for embedding or transmission.

Download Results

Save encoded or decoded output as a text file.

How to use

Encoding:

Enter text in the Input Text area or select a file.
Click Encode.
Copy or download the Base64 result.

Decoding:

Switch to the Decode tab.
Paste a Base64 string in the input area.
Click Decode to see the original text.

FAQ

What is Base64?: Base64 is an encoding scheme that converts binary data into ASCII text, commonly used in email and web data transfer.
Can I encode files?: Yes, select a file in the Encode tab to convert it to Base64.
What if the Base64 is invalid?: The decoder will show an error message if the input is not valid Base64.