Is Base64 encryption?

No — Base64 is a reversible encoding, not encryption. Anyone can decode it back to the original text, so don't use it to protect secrets.

Why does decoding fail on my input?

The decoder needs valid Base64 (only A-Z, a-z, 0-9, + and / with = padding). Extra whitespace, line breaks or URL-safe characters (- and _) will cause it to reject the input.

Does this tool upload my text anywhere?

No — encoding and decoding run entirely in your browser.

Base64 Encode / Decode

Encode text to Base64 or decode a Base64 string back to text.

Plain text

Output

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How it works

1
Choose Encode or Decode
Pick the mode you need at the top of the tool.
2
Enter your text
Type or paste plain text (to encode) or a Base64 string (to decode).
3
Copy the result
The output updates instantly — copy it with one click.

FAQ

Is Base64 encryption?: No — Base64 is a reversible encoding, not encryption. Anyone can decode it back to the original text, so don't use it to protect secrets.
Why does decoding fail on my input?: The decoder needs valid Base64 (only A-Z, a-z, 0-9, + and / with = padding). Extra whitespace, line breaks or URL-safe characters (- and _) will cause it to reject the input.
Does this tool upload my text anywhere?: No — encoding and decoding run entirely in your browser.