Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to text. Everything runs in your browser, so nothing is uploaded.
How it works
- 1
Choose encode or decode
Pick the direction you need.
- 2
Paste your text
Plain text to encode, or a Base64 string to decode.
- 3
Copy the result
The output updates instantly as you type.
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Built to get out of your way
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Tools available
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Languages
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Watermarks added
2h
Until your files are erased
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Free to start
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Devices supported
Frequently asked questions
No. It is reversible encoding with no secret key — anyone can decode it.
What Base64 encoding is for
Base64 turns arbitrary bytes into a string made only of letters, digits, + and /, which is safe to embed in JSON, URLs, emails or HTML where raw binary data would break. It is an encoding, not encryption — anyone can decode it back instantly, so never use it to hide sensitive data.
This tool handles full UTF-8 text correctly, including accented characters and emoji, not just plain ASCII.