Base64 Encode / Decode
Encode text to Base64 or decode Base64 back to plain text, both ways in one tool.
100% private — everything runs in your browser and nothing is sent to a server.
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The Base64 Encode / Decode tool converts text to Base64 and back. It handles Unicode correctly, so emoji and accented characters survive the round trip. Everything runs in your browser, so the text you paste is never uploaded.
Why use this tool
Two-way conversion
Encode plain text to Base64 or decode Base64 back to text in the same tool.
Unicode-safe
Correctly handles emoji and accented characters, unlike naive btoa().
Private
Runs entirely in your browser — nothing is uploaded.
How to use it
Paste your text
Enter plain text to encode, or a Base64 string to decode.
Choose the direction
Switch between encode and decode.
Copy the result
Grab the converted output with one click.
Frequently asked questions
What is Base64 used for?+
Base64 represents binary data as text, so it can be safely embedded in JSON, data URIs, email or URLs where raw bytes would break. It is encoding, not encryption.
Does Base64 keep my text secure?+
No. Base64 is not encryption — anyone can decode it. It only makes data safe to transmit as text, it does not hide it.
Does it handle emoji and accents?+
Yes. This tool encodes via UTF-8, so Unicode characters like emoji and accented letters decode back exactly.
Is my text uploaded?+
No. Encoding and decoding happen in your browser, so nothing is sent to a server.